help-27

[calm sky]

erm

what is RHS?

Im at grade 7

[vast wing]

do you know about least common multiple?

[calm sky]

no

i dont think so

[past scaffold]

Right hand side

[past scaffold]

Solving fractions ?

I mean adding them ?

Like whats 1/2+1/4 ?

[calm sky]

oh ye i think i know that

[past scaffold]

Noice

Try bringing all the x terms to the right hand side

So that constant terms are in one side
And the variable terms are in another side

[calm sky]

so( 1/4+1/6+1/2 )x X +5?

5 22/24x

[past scaffold]

=X

[calm sky]

yes

i alr did that but i dont understand why the result is 60

[past scaffold]

5+ 22/24 × X = X

[calm sky]

yes

[past scaffold]

Now move 22X/24 to the right hand side so that only 5 is on the left side of the equal to sign

Whats the new expression now

[calm sky]

5 = X + 22/24X?

[past scaffold]

No

Take it like 1+3=4
1=4**-**3

Now think again

[calm sky]

so: 5 = x - 22/24X?

its wrong right?

[past scaffold]

No

Its correct

[calm sky]

YAY

[past scaffold]

Now 5 =x (1-22/24)
Do u get it

[calm sky]

so then 5= 2/24 x

[past scaffold]

Yep

[calm sky]

thank you, I started to get it with your help

btw

ur muslim right?

[past scaffold]

Uhh
Yah
But my username "Muhammad Sumbul" is an internet meme

[calm sky]

ok Allah hafiz

thanks

im muslim too

lol

[past scaffold]

Oh

[devout snow]

@calm sky Has your question been resolved?

[devout snow]

Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

[devout snow]

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[placid rover]

I typed out a question in #help-28. I need it to unlock to access it again, so just recycling channels. Sorry for the spam & ignore

[placid rover]

.close

[devout snow]

Channel closed

Closed by @placid rover

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[stuck field]

They rewrote z = r^25 * e^(25i theta)

Can you write it in polar form?

[devout snow]

@quiet glade Has your question been resolved?

[plush vault]

Hey

Can I help

What way

You have to write it in polar form

It is simple

Ok let.me show your way

You expand it ??

By polar form you can do that in 3 steps just

Ya then

I think polar form is much helpful you should try it

May I explain it

[devout snow]

Channel closed

Closed by @quiet glade

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[random glade]

Any formula that could help me with this?

up

[devout snow]

@random glade Has your question been resolved?

Channel closed

Closed by @random glade

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[lapis flint]

I'm struggling understanding division. It's a magical operation that I use all of the time without really understanding its usefulness. I've been using this example to understand multiplication:

For every 1 group, there are 4 flowers. The ratio from flowers to groups is: 4:1

If multiplication is the process of repeatedly adding a number to itself, then:

4 flowers * 3 groups = for every 1 group, add 4 flowers (until there are 3 groups)

3 groups can be broken down into individual units: 1 group + 1 group + 1 group. So, this is a process of iteration.

likewise, when we divide 12 flowers by 3 groups ( 12 / 3 = 4) . What exactly is going on here?

12 flowers / 3 groups = for every 1 group, do what??

[thin tapir]

12 flowers / 3 groups = each group has 4 flowers

Division is intrinsically a more complicated thing than multiplication

It is the inverse process

If every group has 7 flowers and there are 6 groups, there are 7*6=42 flowers in total
And if there are 42 flowers in total and there are 6 groups, each group must have 42/6=7 flowers

[lapis flint]

is there a concrete or iterative process to get 7 flowers

I get long division

but when you add units it gets confusing

[eager nova]

Imagine your example, 12 flowers and 3 groups.

[thin tapir]

You can subtract 6 from 42 repeatedly until you are left with zero

[eager nova]

Give 1 flower to group 1, another flower to group 2, and another flower to group 3

You have one flower to each group, so now you have 9 flowers

[thin tapir]

42-6=36
36-6=30
30-6=24
24-6=18
18-6=12
12-6=6
6-6=0
So 6+6+6+6+6+6+6=42, therefore 6*7=42 and 6=42/7

[eager nova]

You repeat this loop while you have flowers

Every time you finish the loop, you count as one iteration

When you are done with the flowers, the number of iterations is the answer

You can do it just by adding 1 by 1

[lapis flint]

Okay this makes sense

I can think of the phrase "divide by" or the division symbol as allocating 1 unit of the divisor to each group

[thin tapir]

Yes

[eager nova]

Every operation can be done with addition

[lapis flint]

By operation you mean the other arithmetic operators?

[eager nova]

Subtraction, multiplication, power, logarithms, etc..

[stuck field]

Subtraction*

[lapis flint]

How do you do subtraction with addition

unless you mean by making an algebra problem out of it?

isn't the objective to isolate the variable by continuously doing the inverse operation

[eager nova]

To represent the subtraction with an addition, you take the opposite of the number

Of example if you want to subtract 5 to 8

You add to 8 the opposite of 5, which is -5

So you would have 8 + opp(5)

[lapis flint]

what about with multiplication

decimals?

[eager nova]

If you can put in a fraction, it’s like normal multiplication

For example 2/3 times 3/4

You know how to multiply 2 and 3 with addition

2+2+2

And also the denominator

If it’s impossible to write with one single fraction

You will need to use infinite sums of fractions

To get an approximation

But every number with decimals that is not irrational can be written in fraction form

That way you can multiply by using additions

[devout snow]

@lapis flint Has your question been resolved?

[devout snow]

Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[leaden plover]

$\newline U(y) = U_osin(cy) \newline
-\frac{dU(y)}{dy}=cU_ocos(cy)$

[woven radish]

Cewkins

[leaden plover]

@stuck field Sorry for the ping but again i am not entirely sure, again the original function is sin(cy) ignoring the constant U_o, shouldnt we use the chain rule here? otherwise how is the answer cUcos(cy)?

[devout snow]

@leaden plover Has your question been resolved?

[devout snow]

@leaden plover Has your question been resolved?

[stuck field]

This is wrong.

[stuck field]

Chain rule doesn't get unnecessary 0s.

I'm not sure what is it that's confusing you, truth be told.
You've written something, that's what you think should be correct, or is it something that's given to you and you think it's incorrect? Or what?
As you've written, that statement is incorrect.
-dU/dy is not U_0 * c * cos(cy)

(if the channel closes, then don't ping me after you reopen it or open another)

[leaden plover]

The second line is what i think the answer is

[leaden plover]

The answer in the text book is -c * U * cos(cy)

[devout snow]

Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

[leaden plover]

I am literally sending messages here what

[devout snow]

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[stuck field]

That is correct, yes.

[stuck field]

What you've written is not.

You're making this unnecessarily complicated.

Just find dU/dy first

Then put a - afterwards.

That's all you want to do.

[leaden plover]

Okay that makes sense now thanks

Sorry for the pings

.close

[stuck field]

It's my channel.

.close

[devout snow]

Channel closed

Closed by @stuck field

Use .reopen if this was a mistake.

[leaden plover]

Right

[devout snow]

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[main terrace]

/Zaharik

[main terrace]

draw the parallelogram ABCD in the figure; O is the intersection point of its diagonals. The point K is outside the plane of the parallelogram. KA=KC and KB=KD. Prove that KO is perpendicular to (ABCD).

Can you help me?

ok)

[valid iron]

can you try to draw the diagram of the same

i might die in like 2 minutes , so...--

[main terrace]

I hope it's clear?

[valid iron]

yeah

just making sure can you point out where k is

nvm i think you understood the asignment

[main terrace]

nd here's the question: how to prove that OK is parallel to the plane?

[valid iron]

Ak parrallel to the paralllogram plane?

[main terrace]

K is the lower point

ups

OK

sorry

[valid iron]

,,

the question simply asks you to proof ko being perpendicular to the plane no?

[main terrace]

yes

I even turned to the neural network, she was talking about some vertical angles there

Angle AOK= angle COK as vertical

аnd based on this, therefore, that OK is perpendicular to this plane

are you here?

?

ау

Is there anyone here?

аууу

people

<@&286206848099549185>

ayyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy

<@&268886789983436800>

[wooden veldt]

please dont ping mods for math help

[main terrace]

ok

[main terrace]

What should I do?

[wooden veldt]

wait patiently

[main terrace]

50 min?

[wooden veldt]

i dont control how long it takes

[main terrace]

And who?

[wooden veldt]

? no i dont control who helps you

[main terrace]

There are no questions)

[wooden veldt]

not sure what you mean by that

at this point i recommend closing this channel and opening a fresh one

[main terrace]

and how to do it?

[wooden veldt]

do .close here and open a new one the same way you opened this one

[main terrace]

.close

[devout snow]

Channel closed

Closed by @main terrace

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[cinder juniper]

i have done this

[cinder juniper]

but the answer sheet says its negative sign in the parenthesis at the end instead of a minus

i dont see why

[devout snow]

@cinder juniper Has your question been resolved?

[cinder juniper]

<@&286206848099549185>

[limber granite]

yes?

[devout snow]

@cinder juniper Has your question been resolved?

[devout snow]

Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

[devout snow]

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[charred pike]

hi

[sinful crown]

.claim

fak

[charred pike]

so I get that sin(pi-x) = sinx

but i want to know if there are similar rules for tan and cos?

[smoky nimbus]

I'm assuming you mean these

[charred pike]

yeah

oh

cool

thanks

@smoky nimbus but it works for all 0 theta right?

like any angle?

[crystal drift]

not him but it should, but for tangent, make sure that theta is in the domain of tangent

[charred pike]

what

@crystal drift what do you mean "in the domain of tangent"

[crystal drift]

im just saying beware of angles that are coterminal to $\pm \frac {\pi} 2$

[woven radish]

znsn

[crystal drift]

because $\tan \frac {\pi} 2$ doesnt exist

[woven radish]

znsn

[charred pike]

don't you just mean anny angle between two line sthat is 90 degrees?

@crystal drift

[crystal drift]

basically

[charred pike]

and the coterminal angles to theta = pi is 0=90 degree and 0=270 degree

and x should not be those values

because tan 90 or tan270 dont exist

@crystal drift correct?

[crystal drift]

👍

[charred pike]

cool

thank you.

.close

[devout snow]

Channel closed

Closed by @charred pike

Use .reopen if this was a mistake.

[crystal drift]

np

[devout snow]

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[severe otter]

Calculus 2

[severe otter]

Does this look familiar to anyone? Apparently A is supposed to be 51 and C is supposed to be 22, so I was super close. Reworking it rn...

Ohh yes okay

ahh yep ok nvm got it

.close

[devout snow]

Channel closed

Closed by @severe otter

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[brave pilot]

Could someone help me find my mistake?

[toxic magnet]

In the second step, 7*5 = 35

[mossy bloom]

your -25*sqrt(21) is wrong

[toxic magnet]

not -25

[mossy bloom]

^

[brave pilot]

OH

OKAY

I missed that over 80 times when I rechecked AAAHHH

TYSMMM

!!!

[mossy bloom]

ahaha happens goodluck!:)

[brave pilot]

.close

[devout snow]

Channel closed

Closed by @brave pilot

Use .reopen if this was a mistake.

[devout snow]

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[errant wyvern]

In number 4 im not sure how to even start, the only info i have gathered is one side equals two which is already given

[dense lynx]

you can start by finding each of the shown angles

[errant wyvern]

i found that angle P3=108 and P1 and P5 = 36

[dense lynx]

this is a dodecagon not a decagon

[errant wyvern]

oh crap

i read it wrong

so P3=120 and P1 and P5=30

i was thinking of a 30-60-90 like this

but i dont know if thats the way

i still have no idea on how to start

[dense lynx]

it helps to know the 15-75-90 triangle relation

[errant wyvern]

sorry i kept searching the internet and i couldnt get a precise answer

i think its somehting about cos15 and then the 75 angle being sin(15)

im not sure how to plug that it in since cos15 is an irrational number i think

[devout snow]

@errant wyvern Has your question been resolved?

[devout snow]

@errant wyvern Has your question been resolved?

[devout snow]

@errant wyvern Has your question been resolved?

[devout snow]

Channel closed

Closed by @errant wyvern

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[smoky gyro]

Not sure if I set the diagram up correctly

[devout snow]

@smoky gyro Has your question been resolved?

[devout snow]

Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[brave atlas]

99y + 198y + 204 = 0

step by step solution please

[misty crest]

combine like terms

we have two y terms here

99y and 198y

so add them together

u get 297y

so 297y +204=0

[brave atlas]

No sorry

[misty crest]

subtract 204 from both sides

[brave atlas]

I meant

[misty crest]

y^2?

[brave atlas]

99y^2 + 198y + 204 = 0

[misty crest]

ok so use quadratic formula

[brave atlas]

Yep

Can you show me

[misty crest]

a=99

b=198

c=204

[woven radish]

Juke | ping me if no response

[winter brook]

that's the quadratic formula btw

[brave atlas]

What is next?

[winter brook]

plug in a, b, and c

then just solve

[brave atlas]

So we have 2 solutions?

[brave atlas]

I can’t solve it

[winter brook]

u have two roots, yea

,w solve 99y^2 + 198y + 204 = 0

[woven radish]

Results provided by WolframAlpha

Click here to refine your query online
Upgrade to WolframAlpha Pro!

Requested by jukelyn

[winter brook]

u should have gotten these

[brave atlas]

What does it mean?

[winter brook]

it means that this equation will equal 0 when the y is equal to either one of those

in this case, they have to be imaginary. bc imagine this eqn is in terms of x and u graph it, it never crosses the x-axis, so it doesn't have real roots

but there are imaginary ones

[winter brook]

which is what these are here

do u know what imaginary numbers are yet?

@brave atlas

[devout snow]

@brave atlas Has your question been resolved?

[devout snow]

Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

[devout snow]

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[devout snow]

@stable salmon Has your question been resolved?

[devout snow]

@stable salmon Has your question been resolved?

[devout snow]

@stable salmon Has your question been resolved?

[devout snow]

Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[zenith vortex]

Hi

[zenith vortex]

I want some help in making a choice

So, I'm going to buy a CAS, either mathematica or maple

but i cant decide which one

some people praise one while completely denying the other is good

[winter torrent]

isn't maple mostly for engineers?

[zenith vortex]

heck both mathematica and maple has a comparison site where they boast about themselves

[zenith vortex]

well, im not an engineer but ill use it for checking if computations (numeric and symbolic) are right or not

[devout snow]

@zenith vortex Has your question been resolved?

[zenith vortex]

<@&286206848099549185> has anyone tried any one of them?

[devout snow]

@zenith vortex Has your question been resolved?

[iron gazelle]

Hey

Ill suggest to use maple

as it is convenient and easier to understand and would give smooth performance

[devout snow]

Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

[uncut crow]

i suggest sagemath (also it's free)

[devout snow]

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[upper grail]

Hi

[upper grail]

So basically why must 2 be added before the piXr^2

When I’m asked to divide abcd by the circles

The areas of abcd by area of circles

[safe knoll]

are u saying why its 2 pi r^2 and now pi r^2 ?

[upper grail]

I’m asking why the 2 is necessary before the formula of area

When we say pi is r

[safe knoll]

area of circle = pi r^2
the shape u have has 2 circles so the total area of the circles would be
area of first circle + second circle
pi r^2 + pi r^2
2(pi r^2)

[upper grail]

I confused myself

How do I go about to get the area of the rectangle

The remaining

[safe knoll]

u know the value of AD which is 4r

and AD = BC = 4r

AB = DC = 2r

[upper grail]

So is it 4r x 2r

[safe knoll]

yeah thats the area of the whole rectangle

[upper grail]

So 8r - the circles area

[safe knoll]

what are u to find?

[upper grail]

The area of the places not covered by the circles

[safe knoll]

ah ok

[safe knoll]

then this is correct but its 8r^2
4r * 2r = 8r^2

[upper grail]

Why is 8r in the power if 2

Am I asking dumb questions

I forgot everything

[safe knoll]

$$4r \cdot 2r = 8r^{2}$$

[woven radish]

JustToPro

[upper grail]

Ah

[safe knoll]

i mean thats basic algebra

[upper grail]

Forgot about that

Yeah

So that - 2(pi r^2)

[safe knoll]

yeah

if u want , u could factor out the 2r^2 term

$8r^{2} - 2(\pi r^2) = 2r^2(4-\pi)$

[woven radish]

JustToPro

[upper grail]

I think I need to sleep

Thanks for the help

[safe knoll]

np

[devout snow]

@upper grail Has your question been resolved?

[devout snow]

Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[restive river]

(opening for a separate question independent of my other occupied help channel)

[devout snow]

Please don't occupy multiple help channels.

[restive river]

Let $n$ be odd, $n\ge 3$. Show that the edges of the complete graph $K_n$ cannot be partitioned into blocks such that each block consists of the edges of a Hamiltonian graph

[restive river]

So a Hamiltonian path has n -1 edges

the total number of edges of K_n should be n choose 2

so the number of paths is n/2, which isnt an integer for odd n's

so this cannot be partitioned

is my logic fine?

[devout snow]

@restive river Has your question been resolved?

[devout snow]

@restive river Has your question been resolved?

[restive river]

.close

[devout snow]

Channel closed

Closed by @glad quest

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[orchid basin]

This was incorrect, why?

Given a video with these formulas

[zinc flint]

ur r is wrong

u did - instead of +

[orchid basin]

oh good catch

[orchid basin]

Correct solution for A!

ty

Idk about B tho, that one seems pretty cut and dry and idk how they got their ans

[acoustic leaf]

if your point is in quadrants 2-3 (i.e. the x is negative) you have to add π = 180° to the given angle from arctan (since it can only give angles in quadrants 1 & 4)

[orchid basin]

I did tan^-1 (-4/-1) and tan^-1 (| -4/-1 |) and both marked wrong

[orchid basin]

is this prior or after

like would I do
(-1, -4) (given coordinates)

arctan(-4/-1) + 2pi

[acoustic leaf]

just arctan(-4/-1) + π. the angle is exactly opposite what it should be so adding a half-rotation flips it over

[orchid basin]

gotcha gotcha

thank you!

.close

[devout snow]

Channel closed

Closed by @orchid basin

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[odd abyss]

$a\nmid n$ and $a\mid2n \implies 2\mid a$ for any integers $a,n.$

[woven radish]

BeeReallyYum

[odd abyss]

I know this is true, but how to prove it?

[jovial stump]

How would you rewrite those definitions?

[odd abyss]

$2n=aq$ and $n\neq ak$

[woven radish]

BeeReallyYum

[odd abyss]

but I think I just found a way with Gauss's Lemma

[jovial stump]

Nice

[odd abyss]

thanks anyway

[jovial stump]

Np gl

[odd abyss]

but how would I do it using this

if you don't mind

[jovial stump]

Sure!

One sec lol

[odd abyss]

ok lol

[jovial stump]

I'm thinking that you need to prove n is odd and a is even I'd need more time for a specific answer

[odd abyss]

ok it's fine

thanks!

.close

[devout snow]

Channel closed

Closed by @odd abyss

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[oblique rover]

Where should i plug rv+sw to show that this is linear transformation?

[sand dove]

Having trouble reading the upper coordinate of f((x y z))

[oblique rover]

Sorry it’s f((x,y,z)^T)->(x+y+1,x-y)^T

[oblique rover]

Should I do Something like this?

[sand dove]

What should f(0 0 0) be?

[oblique rover]

(1,0)

[sand dove]

Yes, is f a linear transformation?

[oblique rover]

hm

[oblique rover]

can i tell it from just this?

[sand dove]

Yes

f(the zero vector) is predefined when f is linear

[oblique rover]

ou yes you are right never noticed this

nice that eases thing up a lot

but using my method how could i do that?

[sand dove]

You have to write rf(v) + sf(w) on another side

And compare

[stone stump]

well you could for example set v=(x,y,z) and w=(a,b,c). then what is rv+sw?

[oblique rover]

but for example when we have transformation $f:P_4(x,\mathbb{R}) \rightarrow \mathbb{R},f(p(x))=p(3)$ this condition with zero does not hold does it? and it is linear transformation

[woven radish]

Slowaq

[stone stump]

the zero polynomial evaluated at 3 is zero

[oblique rover]

wait how do you write out this zero polynomial?

[stone stump]

0

[oblique rover]

ah

so it is polynomial of first degree?

or that would be p_1(3)?

[stone stump]

first degree would mean it has an x in it

depending on definition the zero polynomial either has degree 0 or degree -infty

[oblique rover]

o no i meant 0th degree

well but isnt x^0=1 thus p(3) isnt 1?

[stone stump]

huh?

the zero polynomial is constant zero

[oblique rover]

hm so then 1 is what degree polynomial?

[stone stump]

still degree 0

[oblique rover]

now i am confused

so zero degree polynomial is either 1 or 0?

[stone stump]

there is no unique zero degree polynomial

there are lots of polynomials with degree 0

[oblique rover]

is it like zero degree polynomial is equal to some constant? P(x)=c?

[stone stump]

yes

[oblique rover]

alright now it makes sense

[sand dove]

Zero degree polynomials are P(x) = c with c not zero

[oblique rover]

ugh but how P(3) is equal to zero then? here

[stone stump]

its still the polynomial that is constant zero

its zero everywhere

no matter what you plug in

[oblique rover]

but why did he write c ≠ 0?

[stone stump]

like I said before, depending on defintion the zero polynomial has degree -infty. not degree zero

[oblique rover]

here when i plug zero matrix its determinant is zero but this isnt linear transformation how come?

[stone stump]

but that doesnt change that it is also a constant polynomial

[oblique rover]

ah alight i think i get it now

[stone stump]

well mapping zero to zero is a very mild requirement

not everything that satisfies it is linear

f(x)=x^17-x also maps zero to zero

but its not linear

[oblique rover]

yes i figured

it seems its good requirement for quick first elimination

alright i think thats all thx for help

.close

[devout snow]

Channel closed

Closed by @oblique rover

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[mighty copper]

assuming you publish a video on youtube , 30 days before your video got 300 views and 60 likes. find the probability of getting 4 like tomorrow

[mighty copper]

This is what I did:
P kf getting a like when you get a view is 60/300

So p of getting 4 likes would be 4 power of thay

But my ta said it's like n=10, p =0.2 and x =4 so just use binomial

But I am still not able to convince myself so can someone please explain

[devout snow]

@mighty copper Has your question been resolved?

[devout snow]

Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[finite tartan]

May I please have help with both questions

[vast wing]

we know that AB = BC, so ABC is an isosceles triangle

and BC = 4y + 1

4y + 1 + 4y + 1 + 2y - 5 + 5y + 1 = 178 (perimeter)

15y - 2 = 178

15y = 180

y = 12

,w 19^2 + 61^2 = x^2

[woven radish]

Results provided by WolframAlpha

Click here to refine your query online
Upgrade to WolframAlpha Pro!

Requested by universal.onion

[finite tartan]

.close

[devout snow]

Channel closed

Closed by @finite tartan

Use .reopen if this was a mistake.

[devout snow]

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[untold arch]

hi i need complex analysis help

[untold arch]

dont know what to do

[devout snow]

@untold arch Has your question been resolved?

[devout snow]

Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[wooden zodiac]

n?

[wraith horizon]

there...is no n

[wooden zodiac]

I have no idea what any of these are

What's a What's l

n is mymber of terms then

You start from r=3 not =0

r=0 would be 31 terms btw

[devout snow]

Channel closed

Closed by @eternal flare

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[snow forge]

when writing the cos, sin, etc for a coterminal angle that is negative, do i write is as the negative or where the angle is on the unit circle

ex:

do i write

sin -pi/2 =
or
sin 3pi/2

[fresh elbow]

I would do 3pi/2 but it depends on the domain also

[snow forge]

wdym the domain it's just the

regular unit circle

[winter torrent]

!original

[devout snow]

Please show the original problem, exactly as it was stated to you, with the entire original context. A picture or screenshot is best. If the original problem is not in English, then post it anyway! The additional context might still be helpful. Do your best to provide a translation.

[fresh elbow]

Regular unit circle I would use 3pi/2 but -pi/2 isn’t wrong either

[winter torrent]

they asked for -30º so you should say -30º

[snow forge]

okay

thanks!

.close

[devout snow]

Channel closed

Closed by @snow forge

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[tepid shadow]

can anyone help me with this graph theory proof?

I have something down, and I think its on the right track, but I am using almost no mathematical language

[tepid shadow]

What I have right now:
proof by contradiction: Assume that no such j > 3 exists. This means that for every vertex Vj with j > 3 for which {v2, vj} E E(G) we also have {V3, Vj} E E(G). Now consider the degree of V2 & V3. The problem statement says that deg(V2) > deg(v3), but if every neighbor of v2 (except possibly V1) is also a neighbor of v3, then v3 would have at least as many neighbors as v2, which contradicts our assumption that deg(v2) > deg(v3), thus there must exist j > 3 such that {v3, vj} is not in E(G)

I guess there is some mathematical language in there, but is it enough? (forgive me, for I know not what I am doing)

[worthy raft]

I think that's pretty good, one thing you could maybe do is note that because {v1,v2} not in E(G) and {v1,v3} in E(G) that the degree of v3 is bigger than deg(v2) if there's no neighbours j > 3

And I think you're using a fine amount of math language

[tepid shadow]

okay, cool! Thank you @worthy raft I really appreciate it!

.close

[devout snow]

Channel closed

Closed by @tepid shadow

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[covert geyser]

a question on the degree and order of a differential eqn

[covert geyser]

but for the following

i figure the order is 3

but for degree do i have to choose to classify the t or y?

i understnad the rule of homogeneity

but im not sure how to tie that in with linear/nonlinear degree

[crisp niche]

y is important, its order of the derivative

[covert geyser]

so then

im gessing non linear

but the order is still 3

[crisp niche]

is linear in respect to y

y = y ( t)

[covert geyser]

ok

[crisp niche]

but coefficients are not constants, be ware of it

[covert geyser]

got it

[crisp niche]

cos is "ugly" element here 🙂

[covert geyser]

so then for the example above

3rd order non linear

[crisp niche]

no

cos refers to t

not to y

right ?

[covert geyser]

so it IS linear?

[crisp niche]

yes

third order, linear

[covert geyser]

so wait

referring back to the definition

[crisp niche]

yes

it is yours

n = 3

[covert geyser]

and for example this question

its 4th order

linear

[crisp niche]

yes

n = 4

linear

[covert geyser]

ok

and this one

second order

[crisp niche]

no

[covert geyser]

non linear

ok

i think i got it

[crisp niche]

it i snon -linear

bbecasue

sinus eats y 🙂

\inside

[covert geyser]

combines t and y as its input

[crisp niche]

yes

[covert geyser]

perfect

[crisp niche]

smiles

[covert geyser]

haha

thanks boss 👍

[crisp niche]

yvw

[covert geyser]

.close

[devout snow]

Channel closed

Closed by @covert geyser

Use .reopen if this was a mistake.

[devout snow]

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[woven tundra]

I need help on number 7 and 9

[devout snow]

Please don't occupy multiple help channels.

[woven tundra]

tsa

[light fox]

do you know how to find the surface area of each of the faces of the shape?

[woven tundra]

not really

been trying to watch videos on it

[light fox]

the area of a triangle is (base length times height) / 2

the the area of a rectangle is the base length times height

once you find the area of every side you add them together to get the surface area

[devout snow]

@woven tundra Has your question been resolved?

[devout snow]

Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[spring hemlock]

hello i need help with a proof
P1 = (x1, y1) and P2 = (x2, y2) such that y > 0 and x1 < x2. C is a circle that contains the points P1 and P2, and is tangent to the x-axis at the point (x3, 0). Prove that the condition x1< x3< x2 cannot always be fulfilled for a circle C given any two points (x1, y1) and (x2, y2).
I need some intuition as to where to start

[hidden bobcat]

i would think youd have to find a way to construct x3 to break the condition

you can use geogebra to get some intuition

[spring hemlock]

how would i use geogebra

[hidden bobcat]

i will make one for you

[spring hemlock]

alright

[hidden bobcat]

https://www.geogebra.org/calculator/xx665at4

here is one counter example

see if you can construct a nicer one

[devout snow]

@spring hemlock Has your question been resolved?

[spring hemlock]

Alright thanks

[devout snow]

@spring hemlock Has your question been resolved?

[devout snow]

@spring hemlock Has your question been resolved?

Channel closed

Closed by @spring hemlock

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[devout snow]

@sudden grail Has your question been resolved?

Channel closed

Closed by @sudden grail

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[deep wing]

Noob question but I wanted to confirm I did this correct?

[torpid rampart]

Checks out. You may get faster help next time making it easier to see at a glance

[deep wing]

ty

.close

[devout snow]

Channel closed

Closed by @deep wing

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[smoky gyro]

I’m a little confused on what I have to do for part B

[restive river]

take I = (10⁸)Io
and the value of Io is already provided

[devout snow]

@smoky gyro Has your question been resolved?

[devout snow]

Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[grave dune]

hi im back, for this i did the vector SR x vector RQ and then took the magnitude but it isn't coming out as correct

[grave dune]

to find the vector SR i did <3-2, 3-0, 0-0>=<1,3,0> and for RQ <1-3, 2-3, 2-0>=<-2,-1,2>

for SR x RQ i got 6i -2j +5k

[tender cobalt]

you should do (SR x RQ) / 2

[grave dune]

ohhhh 1/2 youre right lol

it worked

important step that is

thanks lol

.close

[devout snow]

Channel closed

Closed by @grave dune

Use .reopen if this was a mistake.

[tender cobalt]

np

[devout snow]

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[devout snow]

Channel closed

Closed by @hot inlet

Use .reopen if this was a mistake.

[devout snow]

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[honest oasis]

can someone help me on part C

[honest oasis]

<@&286206848099549185>

[woeful laurel]

Hello sir

I am at your service

What do you need help with?

[honest oasis]

ive got 1/2 a for part a

a+b for part b

but i dont understand part C

[round cedar]

Take 8 common

Then inside it becomes 1+8/x so taking LCM it becomes x+8/x

[honest oasis]

oh i think i see it now

the log8

goes to 3

x+8

b

[round cedar]

3 + b-a

[honest oasis]

yews

thank you

[devout snow]

@honest oasis Has your question been resolved?

[devout snow]

Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[young crane]

How do I solve this system of equations

[devout snow]

@young crane Has your question been resolved?

[young crane]

<@&286206848099549185>

[devout snow]

@young crane Has your question been resolved?

[devout snow]

Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

[devout snow]

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[swift falcon]

https://b7a73ddf4e7837cbc0fe-2d70f3b46d5221cc431a10d880ad7723.ssl.cf1.rackcdn.com/kjks7tewvk/snell_s_law_worksheet.pdf

[swift falcon]

i need help doing this worksheet

from question 1, i have no idea what im doing

[heavy current]

Do you know snell’s law?

[swift falcon]

no clue literally

i only know sin

cosine and tangent

[heavy current]

Presumably you’ve seen this??

[swift falcon]

oh yeah, just at the end of my physics class

very confusing but sure ok

[heavy current]

in any case, Snell’s Law gives the relationship between the refractive indices of two media and the incident/refracted angles

Now you just have to identify what your variables are

And then you can solve for the unknown one

[swift falcon]

ok

wait but like

is n1 multiplied by sin of 1? or is sin1 like a variable of the first number

i don't really get it

would the equation be 1.5(sin45) = n2(sin65)

just simple algebra?

[heavy current]

theta_1 is a variable, namely the incident angle

[heavy current]

Yeah it is

[swift falcon]

but theta is the angle, so

ok

thanks

lemme solve real quick and get back to you

ok

so

i got n2 = 1.544

[swift falcon]

yo dude, i need some helo with #1 on the bottom part of the same page

[heavy current]

use the table to get your variables

[swift falcon]

well i did

and i got to hte point of 0.5 = 1.523(sin())

and so Im thinking, right

if i divide 0.5

by 1.523

do i just get sin (1.523)?

sorry no

sin(0.322)?

[heavy current]

I don’t follow what you’re doing

[swift falcon]

ill send a pic

[heavy current]

kk

[swift falcon]

what i basically have

is

$0.5 = 1.523 (sin())$

[woven radish]

GMDennis

[swift falcon]

can i divide each side by 1.523?

to then get sin(0.328)?

[heavy current]

where is this coming from

[swift falcon]

$0.5/1.523 = 1.523/1.523$

[woven radish]

GMDennis

[swift falcon]

listen just look at the pic

[heavy current]

no but how are you getting sin(0.328)?

[swift falcon]

right ok im really sorry we need to step back, i was under the delusion that the sin of 30 was 0.5, it's 0.988

[heavy current]

Sin(30) is 0.5

you were correct the first time

[swift falcon]

OH ok

sorry my Ti-84 was in radian mode, not degree

[heavy current]

You should have 0.328 = sin(theta_2)

[swift falcon]

well yes, that's what i have

but what do i do with that?

is that simply my final answer?

[heavy current]

use the arcsin on both sides of the equation

[swift falcon]

but it isn't, we still need to find theta 2

ok

i got 19.147 degrees

is that correct?

[heavy current]

looks fine to me

[swift falcon]

so I have to apply arcsin to both sides, so sin^-1(0.328) = 19.147

while the sin(theta_2) cancels out

ok

wow, this is insane

im in 10th grade and never would have dreamt of doing this kind of math

in pHYSICS class

WOAH

WOAH

2?

[heavy current]

I think Snell’s Law is a fairly standard 10th grade thing isn’t it?

[swift falcon]

idk math class hasn't taught it yet, i learned sohcahtoa in 8th grade but not in 9th, teacher had to reteach it

listen

how do i do number 2

it has like exponents and shit

terrifying

[heavy current]

I mean it’s a number lol

[swift falcon]

yeah but

[heavy current]

Use the refractive index formula

[swift falcon]

it doesn't make sense compared to the others

[swift falcon]

snells law, but how do I use it here? is 2.7 * 10^8 the n1 or n2?

[heavy current]

it is not

it is a “slowed” speed of light

i presume you were taught that the speed of light is c = 3.0*10^8 m/s?

[swift falcon]

well

yeah

basically

[heavy current]

To calculate the refractive index of a material, we are essentially asking about how much it slows light

[swift falcon]

teacher didn't want to go into the bs of 299------------ so he just said 300000000 m/s

[heavy current]

The question says you have a slowed speed of 2.7*10^8 m/s

[swift falcon]

correct

[heavy current]

Well yeah it’s 299,792,458 m/s for reasons

[swift falcon]

so do we just divide 270000000/300000000?

[heavy current]

But 300,000,000 is way nicer

[swift falcon]

🤓jk

anyway yeah so

[swift falcon]

is this what we do

[heavy current]

Other way around actually

[swift falcon]

huh

# why

[heavy current]

If a refractice index has value of 1.5, that means that light moves 1.5x slower in it

[swift falcon]

i got like 1.111111111111111111

what units would i stick at the end of it tho

[heavy current]

Ig more accurately, it moves 1.5x faster in a vacuum than it does in the material

[swift falcon]

ok yeah i get it, but what unit at the end of 1.111

[heavy current]

Refractive indices have no units, note that the units in both the numerator and denominator are m/s

So they cancel out

[swift falcon]

so

final answer is just 1.111?

[heavy current]

I mean you can write that yeah

[swift falcon]

k

so the next one is about light travelling throw a liquid

im thinking it's water, but im starting to doubt that real quick

yeah it's wrong

is it crown glass? Sure as seems to me like it

[devout snow]

@swift falcon Has your question been resolved?

[devout snow]

@swift falcon Has your question been resolved?

[devout snow]

Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

[devout snow]

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[devout snow]

What step are you on?
1. I don't know where to begin.
2. I have begun but got stuck midway.
3. I got an answer but I was told that it's wrong.
4. I got an answer and would like my work checked.
5. I have a question about someone else's work/solution.
6. I have completed the problem and don't need help anymore. Thank you.
7. None of the above

[swift falcon]

Economics is crazy

blud even idk

so after 10 years you'll have the 1500

idk hwo to do the equation tho

[swift falcon]

oh hell naw i aint including math into econ

[proper terrace]

is this the formula

[true plume]

I think it should be I may be wrong tho but thats the formula I used for compound interest in the past

[proper terrace]

t is time right ?

[true plume]

yeah

[proper terrace]

ok thanks

.close

[devout snow]

Channel closed

Closed by @proper terrace

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[devout snow]

What step are you on?
1. I don't know where to begin.
2. I have begun but got stuck midway.
3. I got an answer but I was told that it's wrong.
4. I got an answer and would like my work checked.
5. I have a question about someone else's work/solution.
6. I have completed the problem and don't need help anymore. Thank you.
7. None of the above

[stiff scroll]

3

[devout snow]

Show your work, and if possible, explain where you are stuck.

[stiff scroll]

Solid line going vertically down = y >(w line under) -2x + 14
Solid Line going down = x >(w line under) 5
Dotted Line = y < x + 4

thats what I thought ^

[devout snow]

@stiff scroll Has your question been resolved?

[devout snow]

Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[opaque saffron]

So ive got a question. If a wheel is travelling at the speed 21.6km/hr and has a circumfrence of 64pi cm, how long is one revoltution in seconds?

[devout snow]

Please don't occupy multiple help channels.

[opaque saffron]

.close

[devout snow]

Channel closed

Closed by @opaque saffron

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[oblique rover]

How on earth can I determine truth of there statements?

[devout snow]

@oblique rover Has your question been resolved?

[oblique rover]

<@&286206848099549185>

<@&286206848099549185>

[oblique rover]

<@&286206848099549185>

[devout snow]

@oblique rover Has your question been resolved?

[oblique rover]

Why nobody want to help me:(

[restive river]

yo

ill help

[oblique rover]

nice

[restive river]

are you slovak

[oblique rover]

yes and you?

[restive river]

french polynesian

[oblique rover]

ou thats reaaaly far away

[restive river]

from anywhere

[oblique rover]

xd

[oblique rover]

anyway could you help me determine which of these statements are true and why

[oblique rover]

but i am surprised you know slovakia

[oblique rover]

but it must be beautiful living there

[restive river]

ive been in europe

[restive river]

check bora bora

[oblique rover]

dreamland

[restive river]

real

[oblique rover]

.close

[devout snow]

Channel closed

Closed by @oblique rover

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[calm topaz]

what is the definition for a function not to a have a final limit when x is approching infinity? by heine and cauchy

[devout snow]

@calm topaz Has your question been resolved?

[devout snow]

Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[brave pilot]

How would I do this one

[brave pilot]

It does not really make any sense to me

Real

😭

[jovial stump]

[brave pilot]

I HAD NOTHING TO DO WITH THAT

I am a nice student, just studying for my finals

[jovial stump]

Nah I saw dw

[hallow thunder]

Bruv

[devout snow]

Someone else is already using this help channel. If you need help with a question, please open your own help channel/thread (see #❓how-to-get-help for instructions).

[jovial stump]

Ty

[jovial stump]

Is the graph on the right y= f(x)

The intercept turns into -9

[brave pilot]

Idk

How would i know if the

Intercept is -9

If the graph is absolute

[jovial stump]

It looks like the graph is of 1/f(x)

[jovial stump]

So all the inputs are the same we just take the reciprocals of all the outputs

Does that make sense

[brave pilot]

Input is 1/9?

[jovial stump]

The inputs are the x axis

[brave pilot]

hm

I see

[jovial stump]

-1/9 is an output

I input a 0 and got out -1/9

[brave pilot]

oh oki'=

I think I kind of get this

Thanks!!!

[brave pilot]

.close

[devout snow]

Channel closed

Closed by @brave pilot

Use .reopen if this was a mistake.

Available help channel!

Send your question here to claim the channel.

Remember:
• Ask your math question in a clear, concise manner.
• Show your work, and if possible, explain where you are stuck.
• After 15 minutes, feel free to ping <@&286206848099549185>.
• Type the command .close to free the channel when you're done.
• Be polite and have a nice day!

Read #❓how-to-get-help for further information on how to ask a good question, and about conduct in the question channels.

[subtle kindle]

question about my solution

[subtle kindle]

my teacher gives that this function is a concave function when x∈ (-infinity,0),(0,1/2)

convex when ∈ (1/2, infinity)

where did he get the 0 from?

did I do something wrong?

the task was to: find the inflection points of the function and the intervals of concavity and convexity

copied from google translate, so may not be right

<@&286206848099549185>

<@&286206848099549185>

<@&286206848099549185>

[devout snow]

@subtle kindle Has your question been resolved?

[crisp niche]

look:

[crisp niche]

you simply forgot about the domain of the given function and domain of derivtives as well

[subtle kindle]

oh i see

how would i show it on the graph?

like that?

[crisp niche]

yes, and x = 0 is even zero of the denominator, so the graph touches there but doe snot cross it

[subtle kindle]

i see

well, thank you!

[crisp niche]

yvw )

[subtle kindle]

.close