and also sorry lol, just got to know replying someone with "k" is rude lol
#help-33
vagrant gull
and also sorry lol, just got to know replying someone with "k" is rude lol
yep it's rude
white lion
wonder how canadians fare in the putnam then
lethal basin
marsh citrusBOT
summer trench
!status
marsh citrusBOT
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
1
summer trench
do you know 2 point form of a line
lethal basin
nope
tbf i lit just joined from home school
to a public
and this is the hw
i lit need a awnser lol
im dyin lol
burnt abyss
tell your teacher you haven't been taught this
simple quiver
Need help with 6
burnt abyss
lethal basin
bro make ur own one
simple quiver
Oh sorry
simple quiver
Basically take two points (x,y)
In this case I see there’s a point at (1,-1) and (0,4)
lethal basin
correct
simple quiver
Now you use the formula m=y2-y1/x2-x1
lethal basin
whats that
simple quiver
It doesn’t matter which one is y1 or y2
lethal basin
ok
simple quiver
It just matters that you plug it in with the corresponding point for example if you put y2 first your gonna put x2 first on the bottom
lethal basin
Yes.
simple quiver
So with our two points (1,-1) and (0,4) you’ll do -1-4/1-0
lapis steppe
can i just have a awnser if possible lol
We very specifically do not do that here. Read #rules
simple quiver
And your answer will be -5/1
lethal basin
We very specifically do not do that here. Read <#486128019652476939>
bro i said that ages ago 💀 , @simple quiver is trying to help me if you dont mind 😄
simple quiver
So m=-5
simple quiver
Now that we have m you can put that into the equation y=5x+b
Now to solve for b your gonna take one of the points
Either (0,4) or (1,-1) and then solve for b like this 4=-5(0)+b
And you’ll get b=4
simple quiver
So the equation should be y=-5x+4
lapis steppe
bro i said that ages ago 💀 , <@541385501299703868> is trying to help me if you ...
He isn't really helping you no, he's doing the work for you, which he shouldn't be, but that is a different problem. You should still read the rules and respect them.
lethal basin
So the equation should be y=-5x+4
Thank you mate!
simple quiver
Put in Desmos to make sure it’s correct
lethal basin
He isn't really helping you no, he's doing the work for you, which he shouldn't ...
mate just dont get invlolbed plz
lethal basin
Put in Desmos to make sure it’s correct
alr thx
simple quiver
Np
lapis steppe
This isn't the same picture as earlier, though you can follow the same steps to solve it
lethal basin
as i got the firt wrong,takes me to another
can we continue in dms if possible @simple quiver
simple quiver
I checked on desmos and I get the same graph from the first one
lethal basin
weird
simple quiver
You sure you typed in the -5x
lapis steppe
The first solution was correct
lethal basin
You sure you typed in the -5x
yh
simple quiver
Then idk email your teacher or sum
lethal basin
yh i will thx bro
simple quiver
Welcome
eager rock
hello
marsh citrusBOT
hello
@eager rock Has your question been resolved?
Available help channel!
eager rock
can you help with physics questions
marsh citrusBOT
can you help with physics questions
sleek lake
it happens, you can ask and see
marsh citrusBOT
@eager rock Has your question been resolved?
high parrot
Its due in 5 minutes please help
high parrot
Its due in 5 minutes please help
What do i do
stark trail
What do i do
Don’t occupy multiple help channels
cloud iron
What have you tried so far?
marsh citrusBOT
@high parrot Has your question been resolved?
oblique inlet
Can someone help me?
marsh citrusBOT
Can someone help me?
oblique inlet
I need to know what "postulate could be used to prove congruence"
marsh citrusBOT
@oblique inlet Has your question been resolved?
bright cloud
If 2 sides between 1 angle of first triangle are equal to 2 sides between equal angle of another one, so these triangles are congruent. (SAS)
bright cloud
no problem
still temple
If my asymptote becomes an imaginary number, do I mark it?
marsh citrusBOT
If my asymptote becomes an imaginary number, do I mark it?
@still temple Has your question been resolved?
marsh citrusBOT
@still temple Has your question been resolved?
still temple
Find the value(s) of k that make x^2 + k(x+7) + 9x +15 a perfect square trinomial
marsh citrusBOT
Find the value(s) of k that make x^2 + k(x+7) + 9x +15 a perfect square trinomia...
still temple
Find the value(s) of k that make x^2 + k(x+7) + 9x +15 a perfect square trinomia...
solve for k
how would i go about doing that?
distribute the k(x+7) first
oh yeah i did that
im just stuck after that
lemme do it on paper rq
thanks
btw
thats a binomial
not a trinomial
oh okay
lone heart
not a trinomial
No it's a trinomial
lone heart
x^2 + k(x+7) + 9x +15
That's trinomial
still temple
i did it with python and i got 3 and 7, i didnt check negative numbers though — im just not sure how to do it with math
still temple
> x^2 + k(x+7) + 9x +15
That's trinomial
theres nothing to the 3rd power
lone heart
Power doesn't not relate to the naming like that
Trinomial means 3 terms, not 3rd power
hushed egret
i did it with python and i got 3 and 7, i didnt check negative numbers though — ...
do you know of any conditions the quadratic must satisfy so that it is a perfect square?
still temple
no that was the question
hushed egret
do you know about the discriminant of a quadratic?
still temple
yeah
hushed egret
for a perfect square, the discriminant must be 0
still temple
ohhh yeah
hushed egret
with this information can you try solving for k?
hushed egret
np
marsh citrusBOT
hushed egret
marsh citrusBOT
Available help channel!
still temple
Can someone confirm if I am correct here, because the tangent lines would be horizontal?
marsh citrusBOT
Can someone confirm if I am correct here, because the tangent lines would be hor...
still temple
And isn't 1 continuous but not differentiable?
safe badger
Can someone confirm if I am correct here, because the tangent lines would be hor...
x is differentiable at x=-3
safe badger
the derivative at x=-3 is just zero
still temple
its the first choice
safe badger
ah
still temple
thank you for your help
safe badger
np
safe badger
.close lol
still temple
.close
paper herald
Are the local extremes and relatives the same?
marsh citrusBOT
Are the local extremes and relatives the same?
@paper herald Has your question been resolved?
safe badger
Are the local extremes and relatives the same?
Yes
safe badger
Local extrema and relative extrema?
I'm p sure it's the same thing just different wording
paper herald
synomym?
vital sphinx
yes they are synonyms
paper herald
a absolute valkue is f(x)?
vital sphinx
?
paper herald
how i can find absolute value
vital sphinx
absolute value makes any negative number positive
paper herald
absulute maxima or minima*
paper herald
(x,y) x=is local and y=anbsolute?
vital sphinx
absulute maxima or minima*
to find the absolute maximum or minimum of any function, first find all relative extrema and then you can put those x values into the original function
then the largest value is an absolute maximum and the lowest value is an absolute minimum
paper herald
okay thx
vital sphinx
no problem
paper herald
.close
dreamy swallow
how do i solve this
sleek reef
So we know that complementary angles add up to 90 degrees. And we know that opposite angles are equal. Given that angle 2 and 3 are equal and 1+2=3+4 we can conclude that 1=4
marsh citrusBOT
@dreamy swallow Has your question been resolved?
sweet pagoda
How do I do this
marsh citrusBOT
How do I do this
wet holly
U allowed to use trig?
sweet pagoda
U allowed to use trig?
yes
wet holly
Kool cus law of cosines is necessary
I guess for starters do u remember anything about opposing angles of a cyclic quadrilateral
sweet pagoda
I guess for starters do u remember anything about opposing angles of a cyclic qu...
they add up to 180 right?
sweet pagoda
i got x=13
wet holly
noice
Next u can draw a line from B to D, and radii from center to B and from center to D
So if O is the center
U have triangles ABD and OBD after making those line segmenta
Oops
And ye that's where u use law of cosines
u can figure out <OBD by using <C
I believe in u 
sweet pagoda
I don’t understand how there is a triangle obd
wet holly
O B and D are three points
Ur assuming they're collinear
If that were the case then angle A would be 90
cus line OBD would be a diameter of the circle
sweet pagoda
can you show me how you would draw it
wet holly
Err just draw the O a bit down so they don't end up in the same line ig
It'll look like ur O is not at the center of the circle but
Doesn't really matter :p
alternatively u can draw D and B closer to A
That would give u a more accurate picture but I just figured redrawing B and D would be more work 
sweet pagoda
when i draw them closer angle a looks bigger
like greater than 90
when it should be 78
wet holly
oh wait oops ur right
further then
And actually I guess getting <DOB from <A would be easier
sweet pagoda
Something like this?
wet holly
Yee
sweet pagoda
so line bd would be 19.65
elfin berryBOT
Result:
19.647748857585
obd?
wet holly
Ye
sweet pagoda
but wouldnt i still only have 1 angle 1 side
wet holly
but the other 2 sides are equal
elfin berryBOT
Result:
386.03403517075
,calc 386/(2(1 - cos(1562pi/360)))*pi
elfin berryBOT
Result:
316.86071513023
Result:
765.47952433335
Yeah
sweet pagoda
ok i didnt know that bod was supposed to be double bad
wet holly
Np
sweet pagoda
.close
toxic flame
Are these complex limits correct? Ty and advance
marsh citrusBOT
Are these complex limits correct? Ty and advance
toxic flame
marsh citrusBOT
@toxic flame Has your question been resolved?
marsh citrusBOT
@toxic flame Has your question been resolved?
marsh citrusBOT
@toxic flame Has your question been resolved?
marsh citrusBOT
marsh citrusBOT
Available help channel!
twin robin
Hi
twin robin
How is the reciprocal of this ( root 3 - root 2)^x^2-4
night turtle
Rationalisation
Ok lets start with an easier example
What is the reciprocal of sqrt3 + sqrt 2
marsh citrusBOT
@twin robin Has your question been resolved?
twin robin
What is the reciprocal of sqrt3 + sqrt 2
root 3 - root 2/ root 3?
night turtle
you want to make the denominator rational right?
twin robin
root 3 - root 2/ root 3?
ROOT 3 - ROOT 2/ 3?
night turtle
remember (a+b)(a-b)= a^2-b^2
twin robin
I cancelled out 2's idk why i will write it down from next time
night turtle
How is the reciprocal of this ( root 3 - root 2)^x^2-4
anyway its basically the same thing here
twin robin
anyway its basically the same thing here
so the powers won't really matter in here?
as we do not know the x value
night turtle
the denominator would be 1^(x^2-4)
twin robin
Oh
night turtle
so the powers won't really matter in here?
yes because its 1
twin robin
so in here when i tried to solve it by adding the terms
One could've use made sequence
But i'm confused with sequence
twin robin
twin robin
so in here when i tried to solve it by adding the terms
Like 3+2x5
night turtle
hmm you should think about the perfect squares
night turtle
oh
twin robin
but if i do that it will be very calculative
twin robin
I'm trying to understand the sequence here
OH NVM
I got it
1x3 + 2x5 + 3x7+4x9+...
Thanks!
.close
marsh citrusBOT
marsh citrusBOT
Available help channel!
still temple
im confused on what to do on questions 2.1.2 2.1.3 and 2.1.4 i more or less have evrything else figured out
marsh citrusBOT
im confused on what to do on questions 2.1.2 2.1.3 and 2.1.4 i more or less hav...
@still temple Has your question been resolved?
still temple
<@&286206848099549185>
blazing robin
im confused on what to do on questions 2.1.2 2.1.3 and 2.1.4 i more or less hav...
For 2.12 just find the height between peak and crest and half it
For range just notice what y values the graph occupies
For period take the distance, horizontal, b/w crest and peak and double it
still temple
For 2.12 just find the height between peak and crest and half it
so for example on 2.12 i take the 3 and half it?
still temple
For range just notice what y values the graph occupies
sorry could you give a more indepth explanation
marsh citrusBOT
@still temple Has your question been resolved?
still temple
.close
boreal bramble
hi
boreal bramble
im very confused at this question
so when I tried to solve this question myself I got pi(20^2*d)
beacuse why on earth would u square a day?
it says to multiply by day for each day it grows but never mentions squaring
still temple
beacuse why on earth would u square a day?
you have to distribute the exponent to eveything in the parenthesis
your radius isnt 20, its 20d
you square the radius and multiply it by pi.
boreal bramble
your radius isnt 20, its 20d
you square the radius and multiply it by pi.
thanks so much
I didnt realize they were connected by the variable as well
forgot to take that in account
thanks so much brother!
marsh citrusBOT
marsh citrusBOT
Available help channel!
still temple
*The Li'enard equation is [
\dnv 2[u]t + \map c u \dv[u]t + \map g u = 0
]
where $g$ satisifes the conditions $\map c u \ge 0, \map g 0 = 0, \map g u> 0\tss{for} 0 < u < k, \map g u < 0 \tss{for} -k < u < 0, u\map g u > 0 \tss{for} u \ne 0 \tss{and} -k<u<k$
\vs{4 mm}
Show that the point $u = 0, \ff{du}{dt} = 0$ is a stable critical point
marsh citrusBOT
*The Li\'enard equation is \[
\dnv 2[u]t + \map c u \dv[u]t + \map g u = 0
\]
wh...
elfin berryBOT
marsh citrusBOT
@still temple Has your question been resolved?
marsh citrusBOT
@still temple Has your question been resolved?
marsh citrusBOT
@still temple Has your question been resolved?
molten ferry
marsh citrusBOT
molten ferry
shouldn’t a2=(12-30m)/3m instead of (30m-12)/3m
still temple
A trick to find acceleration for the syste
is
A = M1(on the surface) times gravity / M1+M2
where m2 is the box on the pulley hanging down
marsh citrusBOT
marsh citrusBOT
Available help channel!
somber iris
marsh citrusBOT
somber iris
Both my question and answer are written.
There's no solution given solution, so I wondered if this would be considered correct.
Do note that this was a basic exercise in an introductory book to analysis, so I'm not sure how rigorous I'm supposed to be
sleek lake
you could just prove that the average would work for z
that it's not equal to x, or less than x or equal to y or more than y
graceful pewter
find another channel
sleek lake
also delet please
i don't know if yours is wrong, but proofs are never like this
like it reads to me like you stated the same thing
graceful pewter
Both my question and answer are written.
There's no solution given solution, so...
conceptually it's correct I think, but if it asks you to show that something exists, just showing that one such element exists (like the average as was pointed out) is enough.
somber iris
yeah I'm pretty new to the whole proof thing, so I'm not really sure how I should go at it.
How would I prove it for the average?
sleek lake
like
(x+y)/2 ? y
x + y ? y + y
what i want to say is that proofs can ask you for obvious things, but they don't expect you to state it right back
you gotta like do induction, or construct something
graceful pewter
yeah nvm x < y => existence of an open interval containing elements between x and y is just restating the same thing but using the definition of an interval
somber iris
so for this one I basically just have to say that for those given x and y, if you add them up and divide by 2, you'll get a number which is bigger than x and smaller than y (basically just the average)
Would that be it, like would that be considered correct?
graceful pewter
also mention why the average is in R
sleek lake
but ideally you have to do guess what's intended to be the answer 🙂
somber iris
to mention why the average is also in R, would it suffice to say that any 2 numbers in R added and divided by another number in R (except 0) is going to end up being another real number, or is there some other thing I'm not aware of?
graceful pewter
yeah thats it
silver gazelle
PLEASEEEEE
desert dirge
gotta calm down
what have you done
desert dirge
tell me what youve done, or what you dont understand, then i can help
silver gazelle
Its so many numbers
desert dirge
theres only two numbers in that question
silver gazelle
Wait
desert dirge
ig the main thing is converting 2.67kg to grams, but after that, just use the given formula
silver gazelle
I love u
desert dirge
thanks
silver gazelle
Ok well now im def stuck
Like i thought
And now im just straight tripping on air
desert dirge
what did you try for (a)
silver gazelle
I got it wrong
I forgot what i put but what i did was
I multiplied 1.67 x 10-24 but 3
then added it w the nitrogen
desert dirge
and got?
desert dirge
7.33 x 10-47
yeah this is wildly off
desert dirge
then added it w the nitrogen
what you described here is right but idk what youve done in practice
oh
you do not just add the exponents
desert dirge
no
desert dirge
$3(1.67\times 10^{-24})+2.32\times 10^{-23}$
elfin berryBOT
AℤØ
desert dirge
is all you need to calculate
desert dirge
as for b, you know how many grams a single molecule is (a), so how would you find how many are in 1 gram
marsh citrusBOT
@silver gazelle Has your question been resolved?
marsh citrusBOT
marsh citrusBOT
Available help channel!
bitter turtle
Hello! I'd like to ask about linear algebra.
marsh citrusBOT
Hello! I'd like to ask about linear algebra.
bitter turtle
That's the question (the second one)
So far, I have used Holder inequality to get
$$\max_{i\in{1, \dots, m}}|a_i|_q$$
elfin berryBOT
Memiya#9800
bitter turtle
Not sure how to type norms
But it's basically the largest q-norm of the row vectors
But now I need to show that this is equal to the norm
It is more or equal to it
I was advised to use the equality condition of the Holder inequality to find an x vector that selects that largest row.
But I don't really know how to approach that part
Some kind of ratio...
But that's not the part of Holder inequality I used for the first inequality
marsh citrusBOT
@bitter turtle Has your question been resolved?
marsh citrusBOT
@bitter turtle Has your question been resolved?
marsh citrusBOT
@bitter turtle Has your question been resolved?
marsh citrusBOT
@bitter turtle Has your question been resolved?
marsh citrusBOT
@bitter turtle Has your question been resolved?
marsh citrusBOT
@bitter turtle Has your question been resolved?
marsh citrusBOT
marsh citrusBOT
Available help channel!
sudden cape
Can someone help me with the exercises on this sheet https://moodle.colband.com.br/mod/resource/view.php?id=268495
marsh citrusBOT
Can someone help me with the exercises on this sheet https://moodle.colband.com....
sudden cape
ill translate if you need help with translation
vernal forge
Can someone help me with the exercises on this sheet https://moodle.colband.com....
it's unavailable
just send screenshots
sudden cape
k
ill translate it
If one of the roots of the equation is 5, then the other result is
a: a prime number
b : a perfect cube
c : divisor of 48
d: a perfect square
e : a multiple of 3
sudden cape
yh
vernal forge
what are they equal to?
assume the other root is x. thus, what are 5x and x+5 equal to?
vernal forge
do you know vieta's theorem?
sudden cape
i dont
vernal forge
idk what it's called in your school
but it basically says that if you have an equation x^2+bx+c=0, then the roots x_1 and x_2 create this system:
x_1+x_2 = -b
x_1*x_2 = c
your x_1 is 5
what are your b and c?
sudden cape
i know this theorem
vernal forge
good
vernal forge
that's okay
just let a be some number and do the same operations as you would've done with regular numbers
sudden cape
the b would be 2 and the c would be 11 then
sudden cape
hm
vernal forge
you are solving this equation with respect to x. that means that you don't care about the value of a (yet) and treat it as a constant
vernal forge
hint: ||c = 2a+11. what's b?||
sudden cape
b would be -a
sudden cape
but how come the c is 2a+11
vernal forge
a quadratic equation has 3 coefficients: one in front of the x^2 term, one in front of the x term, and one constant
sudden cape
oh i get it
vernal forge
awesome
sudden cape
the c is more "flexible"
vernal forge
yes
therefore, you have:
5+x = a
5x = 2a+11
you should be able to solve this system
sudden cape
quick question, what does * mean
sudden cape
k
vernal forge
$x_1 x_2 = -b$
elfin berryBOT
artemetra
vernal forge
np
sudden cape
can i get more help?
vernal forge
okay
sudden cape
the sheet i sent that is unavailable has content of the next year (for me)
thats why im having trouble
The numeric value of this expression, for x = 999 equates to
vernal forge
factor both numerator and denominator
vernal forge
so i substitute the x for 999?
not yet
sudden cape
k
vernal forge
notice that you have $\frac{(x-1)(x+1)}{(x+1)^2}$
elfin berryBOT
artemetra
vernal forge
can you cancel anything?
sudden cape
998/1000= 0,998
tysm
this is the next one
X is the smallest natural number that makes the square root 1080 times x have an exact value
X is a
a: prime number
b : multiple of 15
c : divisor of 100
d : perfect square
e : perfect cube
is there a way to solve this without "brute forcing" ?
nvm i got it
i need help with this one
translating:
Elevating by cube both sides of the equation and developing it correctly, we reach the conclusion that x^2 + 1/2^2 equals
a : -1
b: 2
c : -2
d: 1
e: 3
sudden cape
x^3 + 1/x^3
sudden cape
3x^2 * 1/x
youre asking me to simplify this?
sudden cape
or this
sudden cape
3x^2 * 1/x
3x
vernal forge
hm
maybe the question has a typo
and they meant square both sides
if they meant square both sides, the question makes more sense but idk
and the answer would be d) 1
sudden cape
the answer sheet says its b) 2
sudden cape
ill skip this one
the next one has geometry content that i haven't learned still
but i do have knowledge about basic operations with rectangle triangles
the triangle ABC is rectangular on A, if BH = 9 cm and the area of the triangle ABH is 54 square cms, the area of the triangle ABC is
300 square cm
150 square cm
96 square cm
144 square cm
192 square cm
fleet fossil
i need help with this one
translating:
Elevating by cube both sides of the equa...
(x+1/x)^2=x^2+2+1/x^2
4-2=x^2+1/x^2
No need to cube
Just square
sudden cape
(x+1/x)^2=x^2+2+1/x^2
4-2=x^2+1/x^2
i see
weird it says "cube"
glad you found the solution, ty
sudden cape
the next one has geometry content that i haven't learned still
but i do have kno...
im familiar with these formulas
and the pythagoras theorem
nvm i manage to do it
all i had to do was 54 = 9.m/2
didnt realize
Can someone help me find the area of this circle
Each square has 16 centimeters
marsh citrusBOT
@sudden cape Has your question been resolved?
grim void
Can someone help me find the area of this circle
Each square has 16 centimeters
for this
sudden cape
yea
grim void
ok so what u have to do is take TO as r(radius of circle)
and the point from O to the point on line EF will become 16-r
also OE will be equal to r
sudden cape
i see
sudden cape
and the point from O to the point on line EF will become 16-r
i dont understand this part
why is that so
grim void
let me show it on drawing
sudden cape
k
sudden cape
ok ok
how am i supposed to do the Pythagoras theorem now tho
i have EP^2 + (16-r)^2 = r^2
i dont know either ep or pf
only op and oe
nvm i do know
ep/pf = 8
Thanks for the help
Does anyone know how to calculate the area of a parallelogram with different sides?
All I have to do is calculate the area of the blackened part
But the sides have different sides (2, 7, 9, 6 centimeters)
I tried dividing the parallelogram into 2 triangles
Then calculating the area of each, then adding them up
But it didn’t work
marsh citrusBOT
@sudden cape Has your question been resolved?
grim void
Can u pls share the question
sudden cape
nvm i already did it
marsh citrusBOT
@sudden cape Has your question been resolved?
wide summit
marsh citrusBOT
wide summit
Okay
late salmon
oops mb
late salmon
nah i did
hollow sparrow
you already have this thread, don't move
wide summit
Ok
So I'm stuck on this proof , in the case where n is prime it follows by theorem however when n is not prime I can't seem to find any manipulations to show it
This is my new line of thought
But u have already expanded modulo and tried setting out the definitions to desried result
I
I wonder then if it's false as that's a possibility
For the q
And requires a counter exmp
vernal forge
you can try going from the definition of mod
onyx reef
if n divides b(a-b), then either the RHS is 0 or a multiple of n
wide summit
if n divides b(a-b), then either the RHS is 0 or a multiple of n
Yes that's true
onyx reef
so you must have either n divides b or n divides (b-a) right
wide summit
so you must have either n divides b or n divides (b-a) right
Yeah makes sense otherwise the number u get would not be an integar which was the assumption ,okay nice and if itsbthe other case where RHS =0 then it would amount to n |0 which is true
Thanks Elliot
last cliff
mean value theorem kicking my butt again. is this just asking for what f'(c) is equal to?
marsh citrusBOT
mean value theorem kicking my butt again. is this just asking for what f'(c) is ...
crisp mortar
HELP
HELP
e^(iπ) - 30 + 208x - 2 + 4x (2x) + (9x) ∫₀ˣ dx = x - x²/2 + x³/3 - x⁴/4 + 4 + (-1)ⁿ xⁿ⁺¹ / (n + 1) + 8 x 2
still vortex
...
marsh citrusBOT
HELP
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).
last cliff
um.
crisp mortar
Someone else is already using this help channel. If you need help with a questio...
wgat
i just need help with this question
i dont understand it
still vortex
mean value theorem kicking my butt again. is this just asking for what f'(c) is ...
Yes, specifically the f'(c) given by the mean value theorem
last cliff
okay thank youu
crisp mortar
<@903045171271311360> Stop spamming other peoples' channels
ok
still vortex
i need help
You can open a channel of your own by the way
crisp mortar
You can open a channel of your own by the way
thanksa
last cliff
for this one, how would i approach this?
marsh citrusBOT
@last cliff Has your question been resolved?
elder wolf
Hi, can anyone help me with this vector question. Im congused as to how the two lines can be contained in the plane, as they don't have the same direction. Should I just do cross product? Thx
marsh citrusBOT
Hi, can anyone help me with this vector question. Im congused as to how the two ...
desert dirge
lines dont have to be parallel to be in the same plane
but doing the cross product of the direction vectors will get you the normal vector of the plane yeah
elder wolf
oh yh, now that i think about it, ig it makes sense
what about this one, idk how to find the point of intersection
night mica
why do you mark the first one =
elder wolf
because it was the right cross product
night mica
ok so intesection of 2 planes its ofetn a line
now a line is given by a starting point and a direction vector
the direction vector is the solution of this linear system
you can do elementary row operation to simplify the system and get the solution
marsh citrusBOT
@elder wolf Has your question been resolved?
elder wolf
when i put z to 0, to solve x and y, it doesnt give me the values I want for x and z
kindred obsidian
where does the +1/3 come from?
marsh citrusBOT
where does the +1/3 come from?
kindred obsidian
ohh of course I was so hell bend on why it was positive I totally missed the -
ok yeah simple answer thanks
.close
sharp mauve
where does the -12 come from? i get +12 when intergrating
marsh citrusBOT
where does the -12 come from? i get +12 when intergrating
sharp mauve
.close
past flicker
marsh citrusBOT
past flicker
Need help understanding why my answer doesn’t match the real answer
dapper hollow
Need help understanding why my answer doesn’t match the real answer
I think that
shy urchin
marsh citrusBOT
shy urchin
can someone help me check my work on part 1a
I think the answer is {b,c,d,e,g,h}
but im not sure what proper set notation is
or if the answer is even correct
spark otter
I think the answer is {b,c,d,e,g,h}
to which question
spark otter
i know the symbol means A does not intersect B
it actually means "all the elements not in (A intersect B)"
if that is what you meant
spark otter
so did you find A intersect B?
spark otter
{b, c, d, e, f, g, h}
yes there you go
shy urchin
lol missed a value
but the issue i have is
proper set notation
im not sure how thats supposed to look
any ideas?
spark otter
what do you mean by proper set notation?
spark otter
{b, c, d, e, f, g, h}
this looks like a perfectly normal set to me
long osprey
(use curly brackets)
clever raven
marsh citrusBOT
clever raven
i need to prove that f'(pi)+f'(0)=0
still temple
Expand the integral
clever raven
I expanded and did parts on both terms
spark otter
It might be easier to show your work so we can find if there's a problem
spark otter
derivative of cos(x) is...
clever raven
-sin(x)
spark otter
yes
clever raven
Oh i made a mistake with the signs?
clever raven
thankyouuu 🙂
spark otter
you most likely did -1 -1 instead of -1 -(-1)
clever raven
.close
shy urchin
i just finished these problems, can someone check it for me please!
marsh citrusBOT
i just finished these problems, can someone check it for me please!
shy urchin
leaden monolith
Do you have reason to believe you’re wrong?
shy urchin
uhh for all of 1, i just wanted to double check
for 2 its because im not very confident
like at all lol
leaden monolith
2’s correct
But if I’m pedantic I’d say A = 1, 2, 3 is not a set
Missing curly brackets from the question
leaden monolith
Looks good as well
thorny jungle
marsh citrusBOT
thorny jungle
I have having some trouble finding this limit
night mica
mh... do you want the exact value of that series ?
night mica
$|n^2+i^n|>|n^2|-|i^n|=n^2-1$
elfin berryBOT
everg
night mica
hence $\frac{1}{|n^2+i^n|}<\frac{1}{n^2-1}$
spark otter
but yeah ok
long osprey
hence $\frac{1}{|n^2+i^n|}<\frac{1}{n^2-1}$
not true, these are complex numbers
night mica
fafilou do you know morphism between algebraic varieties ?
spark otter
fafilou do you know morphism between algebraic varieties ?
no I don't
spark otter
not true, these are complex numbers
yeah you need to add module
night mica
ok ok ... just study the absolute convergence (that imply convergence )
elfin berryBOT
everg
long osprey
(don't mean to be aggressive I think it's important to make things like this as explicit as possible when trying to teach to avoid questions about notation and make it clearer what our potential goal is)
night mica
whotao ...everyone are writing except you xD
night mica
(don't mean to be aggressive I think it's important to make things like this as ...
yes you' re right
spark otter
fafilou do you know morphism between algebraic varieties ?
Don't think I could help you, my understanding is pretty vague
night mica
i am a little bit tired
night mica
Don't think I could help you, my understanding is pretty vague
ah ok thanks np ... i very tough subject
thorny jungle
ok ok ... just study the absolute convergence (that imply convergence )
I am trying to see, if I can use this
night mica
you want to prove convergence ... now we're going to prove something stronger, which is absolute convergence
so now the problem becomes $\sum \frac{1}{|n^2+i^n|}$
elfin berryBOT
everg
night mica
**everg**
by that inequality you get that
$$\sum \frac{1}{|n^2+i^n|}<\sum \frac{1}{n^2-1}$$ where the last series is convergent
elfin berryBOT
everg
marsh citrusBOT
marsh citrusBOT
Available help channel!
gloomy salmon
marsh citrusBOT
gloomy salmon
ive asked like 4 people
and none could help but
realized we only add max once so it should be 3 + 3.75
nvm i just solved it lmao
.close
marsh citrusBOT
marsh citrusBOT
Available help channel!
humble river
humble river
sry i close
Do i have to plug in points
To graph like this one
like -2 -1 0 1 2
brave marsh
If you plug in a really big number into x^2, what do you expect to get?
humble river
like
stoic saddle
Do i have to plug in points
this would not help you btw
brave marsh
In terms of like big, small, negative, positive
humble river
oh
But part of the question they want the graph
but i will get positive number
big positive number]
infinity
humble river
-1000^2
stoic saddle
their product is negative surely
lone heart
But part of the question they want the graph
You should use part a to eliminate options
lone heart
All the questions you've been asking, applies the same concept
humble river
yes it just get harder
lone heart
Describing the end behavior and graphing
If you can figure out part a, you use part a for part b
humble river
So this concept
I will never need to know what graph look like
I can just do the first part and im good
humble river
yes have that big U shape
lone heart
I can just do the first part and im good
But ideally yes
humble river
Ok perfect thnxs
marsh citrusBOT
@humble river Has your question been resolved?
humble river
hi
i did the elimination method but this time it is a different scenario i ask in new channel since this 1 inactive
.close
fair pagoda
Pretty sure i did this correctly can anyone double check
marsh citrusBOT
Pretty sure i did this correctly can anyone double check
late geode
can you show work
fair pagoda
can you show work
Yeah
fair pagoda
can you show work
F'(-1)=11(2)-(5)=17
late geode
what's the stuff before that
fair pagoda
what's the stuff before that
11(-1)^10 h(-1) + (-1)^11 h^1 (-1)
late geode
seems alright
hexed veldt
please help with if that's correct and where to go from here
marsh citrusBOT
please help with if that's correct and where to go from here
late geode
determine slope at the specified point
hexed veldt
how do I do that?
fervent rampart
slope at a given point x = a is f'(a)
late geode
recall the relation between derivatives and slope, (why you're even taking the derivative in the first place)
hexed veldt
idk is this right?
late geode
work is unfinished, missing value at the very end
why do you have
y = 3x + [blank space]
hexed veldt
oh y=3x+1?
late geode
yes
obtuse mural
I dont get this simplification at all
marsh citrusBOT
I dont get this simplification at all
obtuse mural
this is the full answer to the question on proving by induction for Fibonacci:
can anyone help me?
earnest sundial
$2^{(n-1)/2}2 = 2^1*2^{(n-1)/2} = 2^{1+(\frac{n-1}{2})}) \geq 2^{\frac{n+1}{2}}$