help-49

[torpid silo]

@wary thorn

[midnight plank]

@torpid silo Has your question been resolved?

Channel closed

Closed by @torpid silo

Use .reopen if this was a mistake.

[midnight plank]

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.

[last slate]

Why is the set of all real valued polynomials $\mathbb{P}$ a vector space? What are the vectors? It doesn't have to be linear?

[grand pond]

determinate

[last slate]

I need to finish this

.close

[midnight plank]

Channel closed

Closed by @sharp path

Use .reopen if this was a mistake.

[subtle blaze]

The vectors are polynomials themselves

It’s a space of functions

@last slate

[midnight plank]

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.

[last nebula]

where do I start with this question?

oh wait nvm I think I got it

[raven abyss]

Identify right triangles

ok 👍

[last nebula]

.close

[midnight plank]

Channel closed

Closed by @last nebula

Use .reopen if this was a mistake.

[midnight plank]

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.

[gritty holly]

how do you do the following:

[gritty holly]

for what values of m will y=mx-8 be a tangent to the parabola y=x^2-5

[spring latch]

do you know calculus

[gritty holly]

no

[spring latch]

alr

id start by graphing it

[gritty holly]

yeah i already did that

[final plume]

The line $y = mx-8 $ is tangent to the parabola $y=x^2-5$ only when the line touches the parabola at one point only.

In other words, m must be such that this equation:
$mx - 8 = x^2-5$

Has a unique solution

[grand pond]

Daddy_314

[gritty holly]

k

[final plume]

"k

"

[gritty holly]

yeah i think i know what to do

mx-8=x^2 -5

x^2 -mx +3 =0

[midnight plank]

@gritty holly Has your question been resolved?

[midnight plank]

Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

[midnight plank]

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 path]

hello

[midnight plank]

Please don't occupy multiple help channels.

[cinder path]

need help for this

[cinder path]

i found

.close

[midnight plank]

Channel closed

Closed by @cinder path

Use .reopen if this was a mistake.

[midnight plank]

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.

[thorny geyser]

Guys help how do i calculate the f(0,52)

[hard zinc]

what module?

[thorny geyser]

Supply chain management

Is there a table i can look at?

[main current]

We don't know what f refers to here. We might need more context.

[thorny geyser]

This is the task

[main current]

Okay so f refers to the normal distribution

You probably have a table for it somewhere

[thorny geyser]

Yes i looked it up online

But where should i look at the table

[main current]

The pdf can be calculated with any calculator, as long as you know the formula

[thorny geyser]

Do you know the formula?

[midnight plank]

@thorny geyser Has your question been resolved?

[midnight plank]

@thorny geyser Has your question been resolved?

[midnight plank]

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.

[unique cedar]

hi

[unique cedar]

is it too small?

i got the first one right and 36 * 24 = 864 but apperently thats incorrect)

[midnight plank]

@unique cedar Has your question been resolved?

[midnight plank]

@unique cedar Has your question been resolved?

[midnight plank]

@unique cedar Has your question been resolved?

[final monolith]

36 is the width of the larger part, and the 864 is the area of the small section inside the poster

so 864=(36-2*6)*(h-2*9)

gets you 54

which makes sense because the post is supposed to be taller than wide and at about a 3:2 ratio

[midnight plank]

Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

[midnight plank]

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.

[last nebula]

how do I solve this

like do I do cross multiple with sin(x)

like how do I single out the x

to find the angle

this is my process rn

but idk what’s next

[rose cobalt]

$\arcsin(\sin(x))=x$

[grand pond]

Afi

[last nebula]

oh o tysm

[last nebula]

do I put 78 to the X at the front o the equal sign?

[rose cobalt]

You should write it in this way

sinx = c
Then
x=arcsinc

[last nebula]

what?

sorry I don’t get it

[rose cobalt]

Basically arcsin is the inverse of sin
which returns the value of x

[last nebula]

yes I know

can you write an example using that equation?

[rose cobalt]

$\sin(x)=\frac{\sqrt{3}}{2} \
x=\arcsin(\frac{\sqrt{3}}{2})$

[grand pond]

Afi

[last nebula]

but I have to cross multiple?

I did arcsin (78)

I got error

[rose cobalt]

Is the RHS 78?

[last nebula]

whats RHS?

[rose cobalt]

Right Hand Side

[last nebula]

no the bottom is

d=78

[rose cobalt]

What’s the value of the number

[last nebula]

wdym?

.close

[midnight plank]

Channel closed

Closed by @last nebula

Use .reopen if this was a mistake.

[midnight plank]

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.

[umbral rampart]

Wondering if answers are correct

[midnight plank]

@umbral rampart Has your question been resolved?

[umbral rampart]

.

[crisp oxide]

How did you get b and c and what are the units?

[umbral rampart]

volume of big - vol of small

flipped diagram upside down and used pythagoras for big cone and small cone then subtracted

[crisp oxide]

I haven’t calculated it but that’s the right method

[midnight plank]

@umbral rampart Has your question been resolved?

[midnight plank]

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.

[formal prawn]

Is g : R^3 —> R^3
(x,y,z) |—> (1-2t,t,t)
a valid parameterization of C ?

.close

[midnight plank]

Channel closed

Closed by @formal prawn

Use .reopen if this was a mistake.

[midnight plank]

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.

[wintry plover]

Im stuck can skmeone uelp

[fiery plover]

is it $\frac{\sin(2x)}{1-\sin^2(x)}$

[grand pond]

The Prophet Of The Damned

[weak field]

I’m assuming you’re solving for theta, correct?

Or x, you ended up with a combination of them throughout your question

[dull yoke]

@wintry plover ur on the right track

just recall what sin(x)/cos(x) is equal to

[midnight plank]

@wintry plover Has your question been resolved?

[midnight plank]

Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

[midnight plank]

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.

[keen pebble]

Find the definite integral of y = sec^2 (pi x/2) using the graph. The answer the teacher gave was 3.464 units^2 but I got undefined, so i'm not sure if the question itself is wrong or I did something wrong

[raven abyss]

Can you show your work

[keen pebble]

if you put x as 1, it's undefined

[raven abyss]

Oh I think you’ll need to do the limit as it approaches 1 I think

Actually I think I’m thinking of something else

[keen pebble]

lim (sec^2 (pix/2) when x is approaching 1 is infinity

or maybe the answer provided is just wrong 🤔

[raven abyss]

How did you get the area of 1/X from 0 to 1 then

I’m pretty sure there’s a value I remember seeing a video or something lol

[keen pebble]

I have no idea 😭

[raven abyss]

Can I see the original problem

it’s called a divergent integral

the one you have I think

[keen pebble]

so the limit does not exist?

[midnight plank]

@keen pebble Has your question been resolved?

[midnight plank]

@keen pebble Has your question been resolved?

[small jasper]

,w integrate (sec(pi*x/2))^2 from 0 to 2pi/3

[grand pond]

Results provided by WolframAlpha

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

Requested by civil_service_pigeon

[small jasper]

Looks like it diverges

[midnight plank]

Channel closed

Closed by @keen pebble

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.

[tiny gate]

Have I made a mistake anywhere

[tiny gate]

Nvm

.close

[midnight plank]

Channel closed

Closed by @tiny gate

Use .reopen if this was a mistake.

[midnight plank]

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.

[toxic flower]

can someone explain this please? i rearranged to $\frac{dy}{dx} = \frac{y^2 -2xy} {x^2}$ and have $F(t) = t^2-2t$. Im stuck from what to do here. If anyone can help with this, that'd be great

[grand pond]

lewis_f04

[wild solstice]

true answer its 2

[toxic flower]

??

[mortal rain]

Try u=y/x

[midnight plank]

@toxic flower Has your question been resolved?

[toxic flower]

i think thats what ive done? $\frac{dy}{dx} = F(\frac{y}{x})$

[grand pond]

lewis_f04

[mortal rain]

Then you need to transform dy/dx into the expression of du/dx、u and x

[toxic flower]

I have no idea how to do that can you help me with that please?

[mortal rain]

u=y/x→xu=y
Differentiate both sides with respect of x

[midnight plank]

@toxic flower Has your question been resolved?

[midnight plank]

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.

[neon dune]

Hi. could someone help with this? I tried several methods of splitting this up and none worked

[midnight plank]

@neon dune Has your question been resolved?

[sharp coral]

what are you trying to find?

[neon dune]

the summation of (2r+3)/3^r(r+1) from r = 1 to n

in terms of n

im still stuck lol

[sharp coral]

,w sum from r=1 to n of (2r+3)/(3^r*(r+1))

[grand pond]

Results provided by WolframAlpha

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

Requested by cloudedhorizons

[neon dune]

yo what the hell is phi 😭

doing here

how did they get there

[sharp coral]

https://mathworld.wolfram.com/LerchTranscendent.html

[neon dune]

do u have any working

[sharp coral]

i don't think you can reasonably be expected to find such a formula yourself

[midnight plank]

@neon dune Has your question been resolved?

[midnight plank]

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.

[inner onyx]

can someone explain local maximum and local minimum in a way I would understand?

[polar mortar]

what about them? the definition?

[inner onyx]

well i'm given this:

and i need to figure out where local minimum and maximum is

i'm guessing it's where it's low and begins going up

and where it's high and begins going down?

[jovial crest]

Yeah

Those are the local maxima and minima

[polar mortar]

local maximum means the graph has a peak, or highest point, in some region.
local minimum means it has a valley, or lowest point, in some region

[inner onyx]

so in this case, the local minima would be (-2,1)

[jovial crest]

So if you see a " downwards peak " it is a local minimum and an " upwards peak " is a local maximum

[inner onyx]

cause that's the lowest point i'm given

[jovial crest]

Ye

[inner onyx]

alright, thanks

i dont understand none of this

[jovial crest]

Well did you understand how to find the minima and maxima graphically?

[inner onyx]

any of you happen to know what monotonicity is?

yeah! thanks!

i had this in school but was sick ://

[jovial crest]

Yeah

If a function is strictly increasing or decreasing all across its domain it's monotonic

[inner onyx]

so this case is not strictly increasing or decreasing

[jovial crest]

Yeah

So it's not monotonic

[inner onyx]

okay, perfect, thanks

[jovial crest]

An example of a monotonic function is a linear function

[inner onyx]

very tough to remember haha

[jovial crest]

Or e^x

[inner onyx]

yeah I was about to ask about that

but like uh

the graph for sinus?

that goes like up and down

[jovial crest]

Sine isn't monotonic

[inner onyx]

yeah okay

perfect

[jovial crest]

Cause the slope isn't strictly increasing or decreasing in the domain

[inner onyx]

yeah it goes like woosh woosh

up n down

[jovial crest]

Yeee

[inner onyx]

i've got one last question tho

what is definitionamount?

wait let me figure out the proper english word

domain and range i think?

[jovial crest]

Domain is basically all the values that you can define a function for

Example, √x

Here the domain is x≥0

[inner onyx]

wait huuuh

what is √x

[jovial crest]

Square root of x

[inner onyx]

oh

[jovial crest]

So, negative square roots aren't defined in the real numbers

So √x you can only input values greater than or equal to 0

[inner onyx]

uhhhh

like in x's place?

[jovial crest]

Yup

So think of x as a computer

[inner onyx]

why not negative numbers tho?

[jovial crest]

The domain is all the values the computer can accept

[jovial crest]

Because no real number squared gives a negative number. For example, (-1)²=1

[inner onyx]

oh yeah

thats

correct

[jovial crest]

And the range is all the values the computer gives to you

[inner onyx]

ohhhh so it's like

if you're given

y=ax+b

or y=mx+b

your range would be y

[jovial crest]

Noo

[inner onyx]

and your domain would be x?

[jovial crest]

Your range will be all the possible values of y

[inner onyx]

ohhhhhhhhh

[jovial crest]

And your domain will be all the possible values of x

For all linear functions, both domain and range are all real numbers

[inner onyx]

so if I go back to this:

it would be every value?

cause wouldn't it just continue?

[jovial crest]

This looks like a cubic to me so assuming it is, yes

[inner onyx]

hmmm

i wasn't fiven much information about this lol

but if i have

the sine thingy

then there would only be some range

[jovial crest]

Yeah

[inner onyx]

cause it's not infinitely tall

[jovial crest]

But the domain is all reals

[inner onyx]

but there would be infinite domains

[jovial crest]

Spot on!

[inner onyx]

yeah okay

and for tangent it would be opposite?

if i remember them correct

[jovial crest]

Well the tangent function doesn't have a domain of all reals

[inner onyx]

it doesnt?

[jovial crest]

It's undefined for integer multiples of π/2

[inner onyx]

uhhh in english please? 😂

[jovial crest]

What's the tangent of π/2

Or tangent of 90°

[inner onyx]

uhhhhh 1?

[jovial crest]

I mistyped

What's the tangent of π/2

[inner onyx]

i'm supposed to know that by heart?

cause i'll be honset, I have no clue

[jovial crest]

Well

Yes

You should know it only for 5 angles tho

Just memorise the sin values of
0, π/6,π/4,π/3,π/2

[inner onyx]

uhm... how...

[jovial crest]

Well you can find " tricks " online

[inner onyx]

well for 0 it would just be 0, no?

[jovial crest]

Yeah!

[inner onyx]

hmmm

i'm still a bit confused

when in math do you use this? Like under which subject?

[jovial crest]

Trigonometry

[inner onyx]

HUUHHHHHH

i never heard of it

like doing it by head

[jovial crest]

Maybe it's called something diff in ur country?

[inner onyx]

wait

isn't it for balls?

pi/6

[jovial crest]

Well it's more so for triangles

[inner onyx]

oh...

we just... finished trigonometry lmao

[jovial crest]

Oh

[inner onyx]

we had about sine, cosine and tangent awhile ago aswell

but we had like how to utilize it etc

using cas

anyway it's unimportant

i still don't get why tan(x) wouldn't have infinite domains?

[jovial crest]

Undefined for π/2 and it's multiples

[river scarab]

mb

wrong chat

[inner onyx]

all good 😄

[jovial crest]

Its range is all reals tho

[inner onyx]

wait

[river scarab]

sorry about that

[inner onyx]

OH SHI

[inner onyx]

no worries 😄

wait

wait

domain = all possible x's?

range = all possible y's?

then yeah the range is all possible values, my bad

cause i drew it

and these are all possible y's

not x's

[jovial crest]

Ye

[inner onyx]

yeah my bad

[jovial crest]

But u see how it's asymptote when x=π/2 or its multiple

[inner onyx]

asymptote???

[jovial crest]

That it tends to infinity

Meaning it's undefined

[inner onyx]

yeah the y?

[jovial crest]

Ye

Or wair I can explain it better

U know what's cos π/2?

[inner onyx]

yeah it seems like it continues for infinity

uhhhhh

negative?

i'd guess like

[jovial crest]

No

[inner onyx]

1.6?

[jovial crest]

It's 0

[inner onyx]

oop

[jovial crest]

And sin π/2 is 1

Tan π/2 is sinπ/2/cosπ/2

Which is 1/0

Which is undedined

[inner onyx]

OHHHHHHHHHHHHHHHHHHHHHHHHH

cause Tan(v)=opposite/cos

idk how to explain it

[jovial crest]

Ye

[inner onyx]

but yes i figure you understand what I meant lmao

so it's undefined because it doesn't have an answer?

but wouldn't 1/0 = 0?

wait am i failing elementary school math holdups

nevermind

shush

[jovial crest]

This implies that 1=0

[inner onyx]

dont mention anything

you can't say 1/0

1/0 = undefined

[jovial crest]

Ye

[inner onyx]

so Tan(pi/2) is also undefined

and Tan(v)=sin(pi/2) / cos(pi/2 is also undefined

[jovial crest]

Yw

[inner onyx]

well i got that much smarter today, thank you!

i hope i can catch up on this haha

[jovial crest]

Dw u can, i was confused same time last year while learning trigo

[inner onyx]

haha thanks

we have about functions now

i missed one day in half a year and i felt so confused when my teacher said all this was homework

[jovial crest]

What grade are u in if I may ask?

[inner onyx]

well here it would be inbetween highschool and college

[jovial crest]

Couldn't be me, i had a 75% attendance in my previous academic year ( the bare minimum )

[inner onyx]

HUH

here the bare minimum is like the same, but in math i have like 98% lmao

[jovial crest]

We don't have it class wise

We have it overall

[inner onyx]

ah yeah us aswell

[jovial crest]

Cause everyday we have all the subjects

[inner onyx]

ohhhhhhh

[jovial crest]

Where are u from?

[inner onyx]

denmark!

you?

[jovial crest]

Oh I'm indian

[inner onyx]

dang that's far away

[jovial crest]

Ye

[inner onyx]

i'm thinking of studying abroad

[jovial crest]

Same!

I probably will do a bachelor's here though

[inner onyx]

oh you're at your bachelors?

[jovial crest]

No

I'm in grade 11

[inner onyx]

i'll start my bachelors in a little over 2 years

wait so you're

17?

[jovial crest]

Grade 11 is for 16 year olds

No, I'm 15 going on 16

[inner onyx]

holy

you're hella good at math for your age lmao

[jovial crest]

We have a different curriculum, our grade 10 ( for kids who are 15 ) has basic trigo

[inner onyx]

ahhhhh

[jovial crest]

We domt have functions tho

[inner onyx]

lucky you

[jovial crest]

We have functions next year

[inner onyx]

it's painful

we have basic trigonometry last year aswell

but i went to the 7th worst school in denmark

so yeah i didnt learn shi lmao

[jovial crest]

Lmfao yeah my school isnt the best eitherz but I'm changing schools this year

For coaching

[inner onyx]

ohhhhh

[jovial crest]

Coaching is basically preparation for an exam which grants you entrance into most engineering degrees in the country in case u don't know

As well as some other bachelors

[inner onyx]

ohhhh

you're gonna be able to take your bachelors early then?

[jovial crest]

No

Everyone starts their bachelor's ar 18-19

[inner onyx]

ah okay

[jovial crest]

And at 17-18 if you wanna pursue engineering you give an exam, which is what I'm gonna be coached for

It's a retrace honestly

[inner onyx]

ahhhh

that makes sense

it's kinda boring for me tho

we have one of the most prestigious schools for engineering in europe like

5 minutes away from me

[jovial crest]

Oh wow

[inner onyx]

but i wanna study abroad so ´bad lmao

[jovial crest]

I wanna study abroad mainly because I wanna leave the country someday

[inner onyx]

oh?

[jovial crest]

Why?

[inner onyx]

bored of the culture here in denmark, it's a bit too... spoiled?

[jovial crest]

Yeah India's slowly becoming shitty cause of our islamophobic and xenophobic govt

[inner onyx]

ahhh i see

ours is very much the opposite haha

[jovial crest]

Yeah that's expected of Europe haha

[inner onyx]

yeah but people here are so spoiled

and entitled

and very racist

i grew up in a ghetto here

meaning most of my friends were of other ethnic backgrounds

and while going out with them they would always get racist comments

[jovial crest]

Same here

[jovial crest]

Oof that's rough

[inner onyx]

but here it's only the older people

or as they call it "cozy racism"

[jovial crest]

Yeah I'd assume the young people are more tolerant

[inner onyx]

idk how that correlates but wtv

[jovial crest]

Geez

[inner onyx]

they are, by far

but the people here were too rich for too long

so the second something bad happens, they put the blame on immigrants

[jovial crest]

First world problems 😭

[inner onyx]

bro it is fr 😭

[jovial crest]

Oh yeah I've heard of that

Europeans blaming immigrants for every issue under the sun

[inner onyx]

like even my family does

i went to my grandparents

who I love very much

and they're discussing like crime rates in denmark

and like atleast they're not that eyed towards one direction, but I see where they wanted to put the blame

[jovial crest]

Thats basically backhanded racism

[inner onyx]

yeah

it's whatever tbh

people here just love it involve themselves

[jovial crest]

Here, people are discriminatory too but more about religion than race

[inner onyx]

ahhhh

i see

[jovial crest]

Like the Country has 80%+ Hinduism followers who hate all the Muslim ppls and blame them for the shortcomings of the country

[inner onyx]

of course

it's kinda the other way around here

like i'm an atheist

and so many people, especially islamics, have commented on why I am

even blamed me for not being muslim

and most of denmark is atheistic

or like they're christians, but it's more for the culture

[jovial crest]

Ay same here

[jovial crest]

oh ive got tons of that

[inner onyx]

it's kinda overboard but whatever

[jovial crest]

Sort of similar situation here
Here we have to declare our religion in all government papers along with our birth certificates, in all of those I'm a Hindu but practically I'm an atheist, a large portion of the population is like this where they're atheist but on paper they follow xyz religion

[inner onyx]

yeah exactly the same here

except we dont put it on papers

but they're christians who dont believe in christ

[jovial crest]

We have to declare it on paper cause skme religions get benefits by virtue of being a minority

[inner onyx]

oh wow

that sounds

odd?

[jovial crest]

It is

[inner onyx]

tbh all these countries are whatever

[jovial crest]

We have a lot of reservation in government institutes for minoritirs

And people who are in marginalised groups

Maybe 27% I think in government jobs and colleges

[inner onyx]

that's kinda weird, no?

also i found out how stupid the danish politicians were today

someone said that nigerian people go to denmark to fix their phones

and they said that there were no nuclear reactors in europe?

[jovial crest]

I'm trying to make sense of that but I'm having a very hard time

[jovial crest]

Yeah it is, i think we should have the benefits given to those who are financially handicapped and not given to people by virtue of their birth

[inner onyx]

one of the representants of one of the danish political visions said that people from Nigeria have to go to Denmark in order to fix their phones, which just isn't true

[jovial crest]

Any context?

[inner onyx]

yeah that makes far more sense

[inner onyx]

we had a political debate in school, and that was his example

[jovial crest]

Ye, sometimes here rich kids will get admissions into prestigious colleges that they don't deserve

Cause their great grandfather was part of a marginalized community

[inner onyx]

that's odd

here it's far more fair in that sense haha

[jovial crest]

Example against immigrants?

[jovial crest]

Yeah it was implemented as a political tool

To gain support from that community

[jovial crest]

Oh here it's very unfs8r

[inner onyx]

uhhhh it was against sanctions against russia, idk how that correlates either

[jovial crest]

I can give u an example

[inner onyx]

yeah i mean it makes sense for them to do it, but not to uphold it

[inner onyx]

here anyone can get into any public school, highschool or university (we have 3 different schools)

but you have to have a certain grade in order to apply for the schools

for example I'll need an average of 7, which is just above average for my university

and they have systems like that for all universities, aswell as highschools

[jovial crest]

Here most highschools can decide whether or not they want to admit a child on a case by case basis

Sometimes they ask u for extra money

If ur kid isn't that good at acadmeixs

[inner onyx]

ahhhh

yeah it's free here

[jovial crest]

oh heere ur school grades don't matter a lot

In grade 12z the last year before graduation

We have a nation wide standardized exam

Most schools require that you get around 75% in that which isn't that good

And if u do get 75% you'll have to attempt another standardized exam depending on what u wanna pursue

And some schools require that u write their entry exam

[inner onyx]

ah kinda the same here, if your average isn't high enough

[jovial crest]

The example I was talking about, here we have an exam called JEE which has 2 stages - mains and advanced. Mains is common for most engineering courses in the country but advanced is for the IIT's which are basically the best in the whole country ( acceptance rate of 0.5% ). You need a certain percentile in the mains exam to even qualify for advanced. For most of us ( general category ) it's 90 percentile meaning u need to score more than 90% of testtakers but for certain groups it's only 50 percentile meaning they only need to score more than 50% of testtakers

[inner onyx]

that's kinda weird

ANYWAY

i've got a mad mad woman screaming at me

(my mother)

since it's a little late here in denmark lmao

and i've gotta be up again in less than 5 hours 💀

[jovial crest]

Same

I have an orientation todsy

[inner onyx]

dang go to bed bro

[jovial crest]

For my new school

[inner onyx]

ohhhh

then get ur ass to bed

[jovial crest]

I'm in bed but I just can't fall asleep 😭

[inner onyx]

close ur eyes and make it work

anyway, gn

and thanks 😮

.close

[midnight plank]

Channel closed

Closed by @inner onyx

Use .reopen if this was a mistake.

[midnight plank]

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.

[earnest ermine]

(Op A PAU junio 2014) It is known that the graph of $f(x) = ax^2 + b$ has a horizontal tangent line at the point $(2, 4)$. Determine the values of $a$ and $b$.

[grand pond]

MortterGx

[earnest ermine]

please

[dull yoke]

what have u tried

[earnest ermine]

f'(x) = m = 0

[dull yoke]

f'(x) = 0 at what value of x?

[earnest ermine]

2

right?

[dull yoke]

good

so how can we use that information

if we know the slope is 0 at x = 2

[earnest ermine]

$f'(x) = \frac{ax^2-b}{x^2}$

[grand pond]

MortterGx

[dull yoke]

howd u get that?

[earnest ermine]

in the function I have to substitute x,y in the values to clear point a or b

[earnest ermine]

deriving

before substitute

[dull yoke]

no that is wrong

try taking derivative of ax^2 + b again

[earnest ermine]

oh my bad

this one

[dull yoke]

what is that

where is that coming from

[earnest ermine]

the statement is wrong

[dull yoke]

oh

[dull yoke]

this is the correct function?

ok

[earnest ermine]

$f(x) = \left(\frac{ax^2+b}{x}\right)$

[grand pond]

MortterGx

[dull yoke]

this is still wrong

[earnest ermine]

a

[earnest ermine]

where

[dull yoke]

numerator

do u remember quotient rule

[earnest ermine]

$\frac{2axx-1\cdot \left(ax^2+b\right)}{x^2}$

[earnest ermine]

yes

[grand pond]

MortterGx

[dull yoke]

correct

oh wait

[earnest ermine]

then is this.

no?

[dull yoke]

a

sip

lo siento

[earnest ermine]

no pasa nada

[dull yoke]

ok, now we have

f'(2) = 0

[earnest ermine]

$\frac{4a+b}{2}$

[dull yoke]

plug in x = 2, and set equal to 0

[grand pond]

MortterGx

[earnest ermine]

=0

a= -b/4

[dull yoke]

howd u get this

[dull yoke]

u are using this?

[earnest ermine]

yes

its the rigth

[dull yoke]

not this

$f'(2) = \frac {a(2^2) - b}{2^2}$

[grand pond]

Stephen

[earnest ermine]

$f(x) = \left(\frac{ax^2+b}{x}\right) ; \frac{a2^2+b}{2}=0; a2^2+b=0$

[grand pond]

MortterGx
Compile Error! Click the reaction for more information.
(You may edit your message to recompile.)

[earnest ermine]

oh

i see

[dull yoke]

no, we dont set f(2) = 0

f(2) = 4

not 0

f'(2) = 0

entiendes?

[earnest ermine]

$f'(x) = \frac{ax^2-b}{x^2}$

[grand pond]

MortterGx

[earnest ermine]

wait

$4=:\frac{a2^2-b}{2^2}$

[grand pond]

MortterGx

[earnest ermine]

$16=:4a-b$

[grand pond]

MortterGx

[earnest ermine]

$a=:4-b$

[grand pond]

MortterGx

[dull yoke]

no

f'(2) is not equal to 4

[earnest ermine]

+b

mmm

[dull yoke]

f'(2) = 0

$f'(2) = \frac {a(2^2) - b}{2^2} = 0$

[grand pond]

Stephen

[earnest ermine]

I do not have to replace the y?

mb

f'=0

[dull yoke]

f'(2) = 0

[dull yoke]

use this

[earnest ermine]

$4a-b:=0$

[grand pond]

MortterGx

[dull yoke]

sip

[earnest ermine]

$4a:=b$

[grand pond]

MortterGx

[earnest ermine]

xd

then

[dull yoke]

asi ahora tenemos la primera equacion

[earnest ermine]

eres español?

[dull yoke]

necesitamos la segunda

no

[earnest ermine]

ok

[dull yoke]

sabes? como lo podemos hacer?

[earnest ermine]

the second is by substituting in the initial function?

[dull yoke]

yes

[earnest ermine]

2-a=b

[dull yoke]

howd u get that?

[earnest ermine]

I did it before

its wrong btw

[dull yoke]

we know that f(2) = 4

plug in 2 into original function

[earnest ermine]

$\left(\frac{4a+b}{2}\right)$

[grand pond]

MortterGx

[earnest ermine]

=4

[dull yoke]

si

keep going

[earnest ermine]

8/4 -b

=a

[dull yoke]

no

$\frac {4a + b}{2} = 4$

[grand pond]

Stephen

[dull yoke]

$4a + b = 8$

[earnest ermine]

$a=\frac{8-b}{4}$

[grand pond]

Stephen

MortterGx

[dull yoke]

yes

and we know 4a = b

$4a + b = 8 \newline 4a = b$

[grand pond]

Stephen

[earnest ermine]

2b=8

b=4

[dull yoke]

yes

[earnest ermine]

a=1

[dull yoke]

yea

[earnest ermine]

let's summarize the steps xd

today I am not working well

[dull yoke]

we had the point (2,4)

therefore we know f(2) = 4

[earnest ermine]

initial function, I substitute both x and y to clear one variable

[dull yoke]

we also know f'(2) = 0 because theres a horizontal tangent at x = 2

[dull yoke]

sure

[dull yoke]

here we use the derivative function to create a second equation

[earnest ermine]

then I do the derivative of the function to substitute only x and take out the variable again.

I solve the system and that's it

[dull yoke]

yea

[earnest ermine]

then the tangent line q is the formula

y - 4= 0 (x - 2)

y=4

rigth?

[dull yoke]

that just simplifies to y = 4

thats the tangent line at x = 2 yes

but why do u need that?

[earnest ermine]

just to remind myself

I have a global in little and tangent line exercises there are many types I think.

and I get quite confused

[earnest ermine]

Do you think you can make another one with me?

[dull yoke]

ok

[earnest ermine]

6. (Op B EBAU sep 2020)
   Find the values of a and b so that the line of equation y = 6x + a is tangent to the curve ... at the point of abscissa x = 0. Write the functions obtained.

[dull yoke]

ok have u tried anything?

[earnest ermine]

starting

$\frac{b\left(bx+1\right)-b\left(bx-1\right)}{\left(bx+1\right)^2}$

[grand pond]

MortterGx

[earnest ermine]

derivating

[dull yoke]

we already know the slope at x = 0

[earnest ermine]

$\frac{2b}{\left(bx+1\right)^2}$

[grand pond]

MortterGx

[dull yoke]

ok

[earnest ermine]

id understand

[dull yoke]

y = 6x + a is tangent to f(x) at x = 0, so f'(0) = 6

[earnest ermine]

i see

[dull yoke]

just do

1 sec

[dull yoke]

ok so we have f'(x) here

set this equal to 6

and then plug in x = 0

[earnest ermine]

$\frac{2b}{\left(bx+1\right)^2}=6$

[grand pond]

MortterGx

[dull yoke]

yes,

plug in x = 0

[earnest ermine]

b=3

then

$fy=:\frac{b0-1}{b0+1}$

[dull yoke]

we know that f(0) = y at x = 0

so find f(0)

[grand pond]

MortterGx

[dull yoke]

so what is f(0)

[earnest ermine]

-1

[dull yoke]

yes

y = 6x + a

x = 0, y = -1

[earnest ermine]

y= a

a = -1

[dull yoke]

yes

[earnest ermine]

b= 3

this one seemed easier

4. (Op A PAU June 2015)
   Consider the function f(x) = ln(x 1) defined on the interval [2, e + 1]. Determine the equation of the line tangent to the curve y = ln(x-1)
   parallel to the line passing through the points P(2, 0) and Q(e + 1, 1).

[dull yoke]

i gotta get going now

[earnest ermine]

oh ok

[dull yoke]

cya

[earnest ermine]

cya

.close

[midnight plank]

Channel closed

Closed by @earnest ermine

Use .reopen if this was a mistake.

[midnight plank]

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.

[rain wasp]

asking again cuz i still dont get it

and i was afk

[pearl kindle]

see it from this angle

i hope its clear in the picture

thats like its projection from that angle

[rain wasp]

but we dont know AC though

since A is not fixed

[pearl kindle]

thats not AC that we want at the moment

[pearl kindle]

here we can see that AD and AC both has a relation with DC, right?

[rain wasp]

yeah

triangle ADC is a right triangle too

[pearl kindle]

alright, so 4r^2 = AB^2 + AC^2, so here is AB, we still need to get BC^2 into the eq.

can u find a relation between BC and AC?

[pearl kindle]

notice that AC is the projection of BC here

[rain wasp]

i think i can actually find the diameter

since we are given sphere equation and the plane equation

[pearl kindle]

ok, and whats after, u still dont know how to remove AC^2 from here and put BC^2

try to find a plane that has both AC and BC together

[rain wasp]

BC^2=AC^2+AB^2

[pearl kindle]

right!

[old iron]

Damn

[rain wasp]

so we sub this into the first equation?

we would get BC = 2r

[pearl kindle]

?

[pearl kindle]

AC^2 = BC^2 - AB^2

wait

no

[pearl kindle]

that should be 4r^2 = AD^2 + AC^2

[pearl kindle]

as in the picture

[rain wasp]

AD^2+AC^2=4r^2
AB^2+AC^2=BC^2

so therefore BC^2=4r^2 no?

[pearl kindle]

the first eq shoud be AD^2 instead of AB^2

[rain wasp]

oh right yeah

so we would get AD^2+BC^2-AB^2=4r^2

[pearl kindle]

yepp

solve for AD^2 + BC^2

[rain wasp]

ahh i see now

ok brb imma do some calculations

64

seems correct too

@pearl kindle thanks!

[midnight plank]

@rain wasp Has your question been resolved?

[midnight plank]

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.

[steady lotus]

Hi, I'm hoping to get some help with solving this equation:
I always do some kind of algebra which is like "illegal" so I usually end up getting the wrong answer. Can anyone offer some useful advice/tips when it comes to solving the bottom line for V_c1? When I look online it says to use the common denominator etc. but I actually don't know how to quickly work it out.

[hearty rune]

it would be easiest to just split the fractions then factor the Vc1 terms

then you dont actually have to find the common denominator

[steady lotus]

I think that's the process I typically do, and that's where I always end up doing something that I don't realise I'm not allowed to do, and I end up getting it wrong lol

[hearty rune]

hm, how would you do it here?

[steady lotus]

Just writing it out

Alright well I've worked it out and it's correct lol, but I got it wrong originally because I pressed something wrong in my calculator

Maybe I just have to be mindful that I'm putting it correctly into my calculator for exams

this was my working out for reference

[hearty rune]

always helps to double check what you type

or even just type it again with fresh eyes

[steady lotus]

yeah probably hey

but yeah that method will probs be the best one to do, I think I remember a tutor telling me last year in a different course to use that method as well

[midnight plank]

@steady lotus Has your question been resolved?

[midnight plank]

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.

[half crest]

I'm not sure why this wouldn't be the answer, I also tried make j as 1

[sharp coral]

are all vectors in V parallel to the y-axis?

[half crest]

I thought so?

because if x is whatever x is and y is 0 then its just pointing straight up i thought

[sharp coral]

are they pointing straight up?

[half crest]

or straight down

but i feel like maybe its not then 😭

but i dont understand why not

[sharp coral]

what is the unit vector that points straight up?

[half crest]

im not sure

sorry let me check the notes

could it be just <1,0>?

OR NO

THATS SIDEWAYS

<0,1> or <0,y>

idk why i was thinking like that my bad

could you help me with this one too?
originally i said C A B (dumb idk why i did that), but does this make sense for my answers?

[sharp coral]

the gradient field always points in the direction of greatest change

the countour plots always go along the direction of no change

so, the gradient field is always perpendicular to the contours

[half crest]

ohhh?

i struggled with countor plots so its causing me problems again lol

let me think real quick

so far im sure that 3 is A

I'm thinking C B A

[sharp coral]

try to imagine the two images on top of each other. for which combinations is the vector field always perpendicular to the curves?

[half crest]

mmm okok

B C A

i felt confident so I submitted it and it was right

thank you for your help! it was my last problem so i can sleep early tonight as a result!

.close

[midnight plank]

Channel closed

Closed by @half crest

Use .reopen if this was a mistake.

[midnight plank]

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.

[harsh mauve]

If I am asked to find the roots of the quadratic equation: y=-2(x-1)^2-3, you can get two values of x that incorporate the imaginary number i, but would those still count as roots as the quadratic?

[zealous schooner]

Yes they would

They’re just not real roots, they’re still roots

[harsh mauve]

Because if you graph the quadratic out there are no points that intercept with the x-axis

So I should still write them as the roots right, I wouldn’t just put “no roots” as the answer?

[zealous schooner]

Well depends on what type of exercise it is?

Did they ask you specifically for real roots?

[harsh mauve]

it only says roots:, but its only 9th grade math so im assuming my teacher wouldn’t be asking for something that complex

[zealous schooner]

If you haven’t been taught complex numbers then I guess you don’t need to write those roots

[harsh mauve]

Alright well thanks for clarifying, I just wanted to make sure the roots are still considered an answer although the graph doesn’t have any

🙏🙏

.close

[midnight plank]

Channel closed

Closed by @harsh mauve

Use .reopen if this was a mistake.

[midnight plank]

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.

[hardy mica]

Where error

[hardy mica]

,rotate

[shrewd sapphire]

I'm pretty sure

u can't take out square from sin^2

u can use identity tho

[hardy mica]

Why not

[shrewd sapphire]

cuz

sin is kinda like a function probably

so like imagine sin function called f(x)

if it's sin^2

it's f^2(x)

not ( f(x))^2

try using

sin^2(x) = 1-cos2x/2 identy to finish

[hardy mica]

Is trig identity the same as rules for trigonometry

[shrewd sapphire]

likely correct

[hardy mica]

Ok
.

.close

[midnight plank]

Channel closed

Closed by @hardy mica

Use .reopen if this was a mistake.

[tidal token]

yes you can

[sleek dagger]

its literally the same

[tidal token]

$ \sin^{2}(x) = [\sin (x)]^2 $

[sleek dagger]

👍

0<sin^-1(x)<1

i think thats the problem

you insert pie which is larger then 1 therefore it cant be

[midnight plank]

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.

[junior horizon]

Question: A is a set of straight lines. Write a statement that says that there is no pair of two lines in A that are parallel

[junior horizon]

Is this statement true?

[midnight plank]

@junior horizon Has your question been resolved?

[midnight plank]

@junior horizon Has your question been resolved?

[junior horizon]

<@&286206848099549185>

[small ferry]

Hello

State your question.

///

//

/

Cancelled

[midnight plank]

@junior horizon Has your question been resolved?

[midnight plank]

Channel closed

Closed by @junior horizon

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.

[latent plover]

in this differential equation would the particular integral be:

Ax^2*e^-2x + Bx + C?

[midnight plank]

@latent plover Has your question been resolved?

[latent plover]

<@&286206848099549185>

[latent plover]

i have tried differentiating this twice and subbing into the differential equation but like i can't do anything to find A B and C

like compare coefficients and stuff it's soo messy so I think im going wrong

[midnight plank]

@latent plover Has your question been resolved?

[midnight plank]

Channel closed

Closed due to timeout

Use .reopen if this was a mistake.

[midnight plank]

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.

[umbral rampart]

Am fine with question B, need help with A

[hearty rune]

all interior sum to 360
opposite pairs sum to 180

[umbral rampart]

I don't understand what x+2y=160 and 2x+6=110 mean

i mean

i don't understand how for example x+2y=160 came about

[hearty rune]

by the second one

opposite pairs sum to 180

DAB and BCD

[umbral rampart]

oh shit jus saw that

thought it's 8 not 18

[midnight plank]

@umbral rampart Has your question been resolved?

Channel closed

Closed by @umbral rampart

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.

[last slate]

Why is it safe to conclude the vertical U = 0 ?

It only says horizontal u = 21 but never mentions vertical u so why can we infer it is 0

[dull yoke]

pebble is thrown horizontally

means vertical component of velo is 0

@last slate

[last slate]

Thanks

[last slate]

Shouldn't it have any vertical values though?

[dull yoke]

wdym

[last slate]

It has vertical values for acceleration

so why cant it have vertical values for initial velocity?

[dull yoke]

yea, its just saying initially, vertical velo is 0

[last slate]

But why can we infer that? It doesnt say it specifically in the question

[dull yoke]

pebble is thrown horizontally

means initial vertical velo is 0

[last slate]

Ah okay thanks ill make a note of that

.close

[midnight plank]

Channel closed

Closed by @hard blade

Use .reopen if this was a mistake.

[last slate]

.reopen

[midnight plank]

✅

[last slate]

is that also the same for final velocity too?

Just want to make sure i understand it fully

[dull yoke]

well when it hits the ground, ofc vertical velocity is 0

[last slate]

no i mean just before

just before it hits the ground becuase it isnt written so i dont know

[dull yoke]

just before it hits the ground, it has nonzero vertical velocity