because I really do with these things
#help-27
celest ivy
in school they hand us an entrance exam, most of the time 2 and sometimes 1, and they have the topic of the last class (the week before the one they take) and at the end they also have an exam
we get off at 4pm and then I head out to the other place, thank god I got first place in an exam where they choose students to send them to an "academy" and you didn't have to pay
and then I get off there at 8pm
8pm to 12pm I spend most of my time practicing and writing from classes that I have virtually, which are tbh just practice
but doing this every day and saturday too kills the brain
manic onyx
i feel you
i dont know what to tell you its is what it is
i'll be honest i was never the guy who studied a lot
i wasnt the 1-day exam guy
but like 3 5 days?
because i feel i understand stuff fast
so high school wasnt that big of an issue for me, except the times i dont understand
if i dont understand something i feel genuenily bad
i dont know how to write it
and sometimes i go alll night trying to understand
but when i got to undergrad omg
because the exams werent as a big of a deal and i had to do more tesis and exercises
in worst cases i go to uni 7am
go back home 8pm
finish my things until 1am
wake up 7am
repeat
its tough but it's life
celest ivy
yep, even at uni since its public they wont say "you must do this, or this" they just hand the theory and you do what you do, if you dont make it through you are done
manic onyx
exactly
they throw only vague hints
of what to do
and if you dont deliver
you are screwed
celest ivy
hell, I'm not even at uni and it feels like being inside, I think it might help to be adapted to those situations
manic onyx
it's not bad if you like what you do
in my case, for me dont matter if i stay 12 hours in the same thing if im interested in it
but in the case when i was in comp science
specially WEB DEV
its was a bruh moment
i hated it
manic onyx
yes
you have to like what you do
to make the engine work
thats what i think
or do something that will get you a lot of money
like the med guys
celest ivy
honestly med is one of the hardest careers out here
manic onyx
true
celest ivy
not everyone is a med (public uni) in here
but if you have some moneyy
the story turns itself upside down
celest ivy
They can even buy the credits to pass the sujects
manic onyx
you can be everything
manic onyx
They can even buy the credits to pass the sujects
well thats a stretch
celest ivy
at the end, it's just a damage to themselves
manic onyx
They can even buy the credits to pass the sujects
at the most here you can bribe the teachers
most of them accept
celest ivy
but even so, private unis have their prestige (obviously if the student has his dedication too)
celest ivy
at the most here you can bribe the teachers
woah, here if you try to do so (from what I heard) in the best case they will accept it, and in a worst case scenario they will kick you out of class and are told to not come back at that class
anyways, I must finish this paper sheet, it wont be done by itself
celest ivy
good luck with your exam, I will be sleeping too sometime soon
I'll leave the question if someone got an easier way to get around it
celest ivy
sure enough, me too
celest ivy
might be better like that
manic onyx
gn
celest ivy
In an equilateral triangle ABC there is a point P in its inner region, if the angle of PAC= x, the angle of PCA=2x and the angle of CBP=3x, what is the value of x?
devout snowBOT
In an equilateral triangle ABC there is a point P in its inner region, if the an...
celest ivy
6 is the most probable answer, here is the procedure
If anyone can find a faster way to go through it or if the answer is wrong it would really help, thanks
glossy perch
why does 6x become 3x?
glossy perch
2y = 120 + 6x > y = 60+3x
glossy perch
glossy perch
celest ivy
is it fine?
gloomy crow
heyo
gloomy crow
im confused on whaat the prompt is asking of me here,
aren't zeros & solutions interchangeable
forest shuttle
im confused on whaat the prompt is asking of me here,
You need a english teacher to check your maths
💀
restive river
Lol
forest shuttle
I think I understand but the wording is so weird
forest shuttle
Multiply x+3
Yeah for a
sweet elk
Does it want us to find the x
gloomy crow
You need a english teacher to check your maths
you're punctuation should send you back to 2nd grade
sweet elk
Hey were al frineds here
ashen dagger
im confused on whaat the prompt is asking of me here,
they just want you to shift everything to one side
Like for a you would have (x-3)/(x+3)-2=0
so then f(x) = (x-3)/(x+3)-2
forest shuttle
Oh
gloomy crow
so then f(x) = (x-3)/(x+3)-2
ah I see
sweet elk
gloomy crow
that works, but the prompt wasn't asking to solve
forest shuttle
Hey were al frineds here
Your name tho
toxic cargo
lol
toxic cargo
that works, but the prompt wasn't asking to solve
Whats the q
gloomy crow
im confused on whaat the prompt is asking of me here,
.
restive river
You see they asked for a function, I just simplified he function so I think it should work
forest shuttle
you're punctuation should send you back to 2nd grade
I just noticed how it looks like I’m insulting you I was talking about the question
Could’ve worded that better myself
gloomy crow
so what were you implying when you said, "You need a english teacher to check your maths."
maybe I misunderstood
restive river
💀
toxic cargo
Zeroes are also known as -intercepts, solutions or roots of functions. They are the values where the height of the function is zero. For rational functions, you need to set the numerator of the function equal to zero and solve for the possible values.
toxic cargo
Just asking can first one be done like this?
So this should be correct
restive river
Thanks
gloomy crow
alrighty
forest shuttle
so what were you implying when you said, "You need a english teacher to check yo...
The actual maths homework but now I get what it means it kinda makes sense
devout snowBOT
Available help channel!
sturdy nova
i need help
devout snowBOT
i need help
brisk hare
everyone does
manic condor
sturdy nova
so i have a graph rn and they are asking me to find the x intercepts
like there is a diff rule for each method to find out the intercepts
like there is 2 formulas
one for sin and one for cosin
its really confusing
y=3sin(2x)
can you tell me the values of x where sinx is equal to 0?
sturdy nova
can you tell me the values of x where sinx is equal to 0?
this is literally all they gave me
no graph
im meant to graph it myself
restive river
this is literally all they gave me
i was asking a question to you haha, but nonetheless won't sinx be 0 at 0, π, 2π, 3π and so on? so can't you just generalize and say that if sinx is 0 then x = nπ. you can analytically think and generate an expression for cosx = 0 as well
so in your question to find x-intercept, equate y = 0
3sin(2x) = 0
so what would be x equals to?
sturdy nova
you know all i know but i think ive figured it out
theres a formula
to find the x-intercept its
(0,0)(1/2 x 360/b,0) (360/b ,0)
b is 2x
restive river
well i don't remember the formula, i just do the way i've sent
restive river
i was asking a question to you haha, but nonetheless won't sinx be 0 at 0, π, 2π...
sin(2x) = 0
2x = nπ
x = nπ/2
sturdy nova
what is n here?
restive river
i remember the general solution for sinx = 0 (multiples of π - nπ) and cosx = 0 (odd multiples of π/2 - (2n + 1)π/2)
restive river
what is n here?
it's any integer, if you see the graph of 3sin(2x) it'll cut x-axis multiple times
,w graph y = 3sin(2x)
woven radishBOT
sturdy nova
it's any integer, if you see the graph of 3sin(2x) it'll cut x-axis multiple tim...
alr thanks
restive river
alr thanks
you're welcome
devout snowBOT
@sturdy nova Has your question been resolved?
strange fractal
Hi
timid whale
That a 1 or a 7?
solar goblet
im assuming the equation is equal to 0?
strange fractal
im assuming the equation is equal to 0?
No. Its equal to -1/4 xd. So h—> 0
Forgot to say
solar goblet
No. Its equal to -1/4 xd. So h—> 0
so basically find the limit of the equation when h approaches 0?
strange fractal
Yes
strange fractal
so basically find the limit of the equation when h approaches 0?
.
solar goblet
im thinking
restive river
i think the limit is equal to -1/2
and not -1/4
,w limit h tends to 0 ((2)/(2+h) - 1)/h
woven radishBOT
strange fractal
I also seen this: $\frac{\left(\frac{-h}{2+h}\right)}{h}= \frac{-h}{h \cdot 2(2+h)}$
woven radishBOT
maizz01
strange fractal
$\frac{-1}{2(2+h)}$
woven radishBOT
maizz01
strange fractal
But didn't understand it that well
restive river
I also seen this: $\frac{\left(\frac{-h}{2+h}\right)}{h}= \frac{-h}{h \cdot 2(2+...
that isn't correct
strange fractal
It went too fast
restive river
where did that additional 2 come from in the denominator?
restive river
$\frac{2 - 2 - h}{h(h+2)} = \frac{-h}{h(h+2)} = \frac{-1}{h+2}$
woven radishBOT
notamy
restive river
so when h tends to 0, the expression tends to -1/2
strange fractal
Seems logical
strange fractal
so when h tends to 0, the expression tends to -1/2
Is it okey to write it down like this?
someone told me it isnt correct to write these d/dh there
d/dh= derivative
restive river
Is it okey to write it down like this?
it isn't wrong tho cause that's what l'hopital rule does but conventionally no one writes that afaik
btw what's the function for which you've to find derivative?
strange fractal
it isn't wrong tho cause that's what l'hopital rule does but conventionally no o...
I see, but it looks cool xd
strange fractal
btw what's the function for which you've to find derivative?
f(x)= 2/x
x_0= 2
f'(2)
strange fractal
Its pretty easy but I did it more difficult to learn more about lim and advanced derivatives
ig
restive river
mhm
strange fractal
the answer might be wrong (-1/4 one)
Yes look at this
The tangent has the slope of -1/2
restive river
Yes look at this
ye, the gradient of the tangent is -1/2
strange fractal
jep
I was so confused when I saw it were -1/4
For example another dude did this:
f(x) = 2/x
m = (f(x + h) - f(x)) / h = (f(2 + 2) - f(2)) / 2 = (0.5 - 1) / 2 = -0.25
It actually seems also logical
restive river
f(x) = 2/x
m = (f(x + h) - f(x)) / h = (f(2 + 2) - f(2)) / 2 = (0.5 - 1) / 2 = ...
it's wrong, you can substitute h = 2
strange fractal
it's wrong, you can substitute h = 2
ah and you have to re-substitute
missing this step had led him to a false solution?
restive river
ah and you have to re-substitute
h is tending to 0
strange fractal
I see
Thank you!!
You are only 16 years old and already know so much 👏
.close
devout snowBOT
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Available help channel!
gloomy dune
I got an answer to this question but I have no idea where I went wrong. I got the same acceleration as they did in the mark scheme, but I don't understand why they do the whole system step next? The formula for coefficient of friction is F <= mu * R
So the system has to be in equilibrium for F = mu *R, which is what I did.
I said Just before sliding, T = F = 75.228N
75.228 = mu * 8g
and then solved for mu
devout snowBOT
I got an answer to this question but I have no idea where I went wrong. I got th...
quartz estuary
devout snowBOT
velvet viper
<:blobcry:971797574916907028>
did you draw a diagram
solar goblet
Find the side of the smaller square and the side of the bigger square
Let r be the radius of the circle, you will find that the side of the bigger square is 2r, while the diagonal of the inner square is also 2r
From there use Pythagoras theorem to find the side of the inner square and calculate both squares' areas
quartz estuary
did you draw a diagram
yes
quartz estuary
From there use Pythagoras theorem to find the side of the inner square and calcu...
so i use pygathorean theorem for both triangles?
oh jk i use the triangle using the diagonal of the big square?
devout snowBOT
@quartz estuary Has your question been resolved?
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Available help channel!
solemn seal
devout snowBOT
solemn seal
is the answer 0.048N
minor timber
its Physics
stuck field
,w (4 * (√(29.812) - √(2 * 9.81 * 1.6))/55) * 10^6
woven radishBOT
stuck field
That.
devout snowBOT
@solemn seal Has your question been resolved?
devout snowBOT
devout snowBOT
Available help channel!
abstract bough
hi, i need help solving this linear system
devout snowBOT
hi, i need help solving this linear system
abstract bough
i have x = 0, y = -2z and z = -x
i need it to be a triple of known integers
cmiiw?
left flower
i have x = 0, y = -2z and z = -x
i think x can be any number
abstract bough
but i need it to be -1
solemn ruin
lemme check
abstract bough
it's -x + 2y +z btw
formal pecan
Given z is free, x = -z, y = -2z
So choosing z = 1 will give you the solution you mentioned
woven radishBOT
abstract bough
Plug that in to second eq and solve for x
oh ok
left flower
we can use any number but following y=2x and z=-x
prime egret
No it just means x = -z, y = -2z and any points in this form would work
You can say z=t then any point in the form (-t,-2t,t) would work
abstract bough
oh ok ?
forthe third eq
well, and first
they both equal -y
i've done 2z = 2z
now i can't divide
to get 1
x = -z, y = -2z
they're both z's aka in the same form
or t as you said, z=t
how do you get the last '1t'
tell me if i'm not making sense 😵💫
formal pecan
Your system of equations doesn't have only one solution
Basically, you can put any real/complex number for t, find x,y,z accordingly, and that x,y,z will indeed solve the system of equations
devout snowBOT
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Available help channel!
night moat
to find the order of elements of Sn do we keep multiplying g by itself until we get to (1....n)
devout snowBOT
to find the order of elements of Sn do we keep multiplying g by itself until we ...
dull tangle
No its simply just 12 x 134, since (a)(b) = a x b. Really weird ik but get used to it 👍
so for part a) it is 12x134 = 1608
.close
devout snowBOT
night moat
hom les use les helpers
devout snowBOT
Available help channel!
restive river
hey everyone
devout snowBOT
hey everyone
restive river
can someone explain to me how it converges absolutely
because after the alternating series test
I compared it to a p-series 1/k^8
and the p series converges
but the orignal one is bigger than the p series i compared it to according to desmos when I plotted both of them
if someone can assist me it would be very well appreciated because I'm banging my head rn
formal pecan
Uhh did you use direct comparison test?
formal pecan
And which is the bigger one?
restive river
but the problem is that the orignal one is bigger
and the p-series converges
cuz p > 1
formal pecan
In this case, the direct comparison test is inconclusive
Try the limit comparison test, if you learnt it
Actually, 1/k^8 might not be the way to go now that I think about it
formal pecan
Hmm okay so for all integers n (also applies to positive real numbers in general), n > ln n
And ln (k^5) = 5 ln k
You could try to make a case for direct comparison test by using these information to make an expression that's definitely bigger than the original
devout snowBOT
@restive river Has your question been resolved?
mild basin
devout snowBOT
mild basin
is there a shortcut or useful method to finding the correct scalar?
-16/28 does not come to mind right away, but it works
to make R2 pivot -4
mild basin
divide by 7, multiply by -4
that gives me -16/49
mild basin
-4/7 divided by 7 multiplied by -4
mild basin
ugh.. it's so simple
tyvm
i can do the opposite too
if I want to remove 7 from R2
-7/4 (4)
to get -7
for the R3 pivot
i have been plugging random numbers into calculator but it's so simple
i should try this next time for fractions, same rule should apply tho
it will turn into a skyscraper rational but it should work the same way i believe
just plug into calculator to find
actually I will try right now but making 7 = 7/3
it's a bit trickier but it works
12/7
as the scalar for 7/3 to become 4
.close
devout snowBOT
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dry loom
Points A(2; 3), B(-1;5) and G (0;1) are given in a regular coordinate system. If point G e
midcenter of ABC, the coordinates of point C are:
A) C(-1;5)
B) C(-1; —5)
B) C(-5;1)
D) C(-5;-1)
devout snowBOT
Points A(2; 3), B(-1;5) and G (0;1) are given in a regular coordinate system. If...
dry loom
does anybody have an idea how to solve this?
toxic cargo
Yep just use the midpoint formula then substitue the value
dry loom
but it isnt a straight line
oooh i have to find the middle between A and B and use that point
toxic cargo
Yee
dry loom
what was the formula
toxic cargo
Idk
dry loom
oh damn, it is the same
toxic cargo
Yepp
devout snowBOT
toxic cargo
U r welcome
devout snowBOT
Available help channel!
night moat
devout snowBOT
night moat
can someone pls guide me through proof by induction at uni lvl
vapid nest
iirc abelian group means composition is communtative
night moat
yep ik that
night moat
then k+1 right
vapid nest
then for n = k+1
vapid nest
the same as further maths then lol
(gh)^(k+1) = (gh)^k * (gh)
woven radishBOT
nosqldb
vapid nest
$then for n = k+1, (gh)^{k+1} = g^kh^k (gh)$
woven radishBOT
nosqldb
vapid nest
or sm
night moat
.close
supple cedar
I need help with 2a
devout snowBOT
I need help with 2a
empty yoke
Meaningful? 3 feet would be a good answer
For b part 25*40 - (25-2x)(40-2x)=504
Solve for x
devout snowBOT
@supple cedar Has your question been resolved?
supple cedar
Meaningful? 3 feet would be a good answer
Why 3?
empty yoke
I mean there is no definite answer
drifting sierra
It's asking for "what values", 3 is a pretty bad answer
radiant canopy
lets make it pi
drifting sierra
Also the problem looks ambiguous to me
drifting sierra
You're not making any sense
empty yoke
Wut?
empty yoke
Also the problem looks ambiguous to me
It is mate
Can't you see its saying "meaningful" so no definite answer
Just an estimate
Small trees and bush are usually small
So 3,4,5 feet is a good answer
drifting sierra
It says nothing about how many trees and bushes are in the border
It also does not define what "small" is
Your answer is not a good one
And that's not what I mean by ambiguous
empty yoke
So how would you plant it? Then in circle 😂😂
I have seen patio like this
They are usually planted in order
Search it up
empty yoke
Tf you stupid kiddo
Don't you have common sense
😂😂Fking troll
Okay gardener is Nel
Do whatever you want
drifting sierra
Aaaand blocked
drifting sierra
@supple cedar do you still need help?
empty yoke
Aaaand blocked
Lmao thanks
devout snowBOT
@supple cedar Has your question been resolved?
supple cedar
So there is no definite answer?
devout snowBOT
So there is no definite answer?
vapid nest
Aaaand blocked
why would you block this perosn
drifting sierra
why would you block this perosn
For resorting to insults?
supple knot
why would you block this perosn
!redir
devout snowBOT
why would you block this perosn
This channel is only for on-topic discussion. Please take casual conversation to #discussion or #chill.
supple knot
So there is no definite answer?
Use .reopen next time
supple knot
Like this says
supple cedar
.reopen
supple cedar
<@902307748727885845> you here?
Yep I'm here
I have a question on 2b
In not getting a great answer
drifting sierra
Then show it
supple cedar
It's not a whole number
drifting sierra
I don't think you've understood the question correctly
supple cedar
Is my algebra not correct?
drifting sierra
They have planted a border [...] the border has the same width x all the way around the patio.
If the planted area is 504 [...]
Do you understand what's wrong now?
drifting sierra
If I interpret the question correctly, yes
supple cedar
Is my equation right
devout snowBOT
@supple cedar Has your question been resolved?
mossy phoenix
how do i put the quadratic function, x=+ or - 4i , in standard form
mossy phoenix
oh yeah mb the function's solution is x = + or - 4i but i dont know how to put it in standard
drifting sierra
If a and b are the roots of a quadratic, that quadratic is (x-a)(x-b)
mossy phoenix
what would be a and b
drifting sierra
By "the function's solution", you mean the solutions to f(x) = 0, right?
mossy phoenix
.close
near stone
devout snowBOT
near stone
for this question, do i need to add the numbers given and just use a calculator to find the answer?
spare zealot
woven radishBOT
Result:
94.247779607694
,calc 4/3 * pi * 2.5^3
woven radishBOT
Result:
65.449846949787
fleet shard
K so it seems like I have to write this number as a power with base 2
(32)/8root16
fleet shard
and that’s not meaning square root
It means like root 8
Here’s my work
Oh wait
I don’t even need help on that problem
But I need help on another one now
It wants me to rationalize the denominator of this fraction
1/((5sqrt3)*sqrt2)
How do I do that
near stone
It wants me to rationalize the denominator of this fraction
1/((5sqrt3)*sqrt2)
$\frac{1}{(\sqrt[5]{3} \times \sqrt{2})}$
woven radishBOT
𝔄𝔨𝔦𝔯𝔞 🍇
near stone
looks like this?
fleet shard
Yes
near stone
can you multiple them by sqrt 2
i forgot how i would solve for sqrt[5]{3} 
yeah just rationalize it
near stone
I’m not good at that
$\frac{1}{(\sqrt[5]{3} \times \sqrt{2})}\times \textcolor{red}{\frac{ (\sqrt{2})}{ (\sqrt{2})}}$
woven radishBOT
𝔄𝔨𝔦𝔯𝔞 🍇
near stone
can you try doing that now?
woven radishBOT
𝔄𝔨𝔦𝔯𝔞 🍇
woven radishBOT
𝔄𝔨𝔦𝔯𝔞 🍇
near stone
https://www.youtube.com/watch?v=KlZPKMDwg6M
it explains it here
devout snowBOT
@fleet shard Has your question been resolved?
fleet shard
it’s still confusing
Is that like
My final answer?
Or do I keep going
Cos if I keep going
Idk what to do
.close
devout snowBOT
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Available help channel!
kind canopy
devout snowBOT
timber pebble
you have options
i think the easiest way is to write it in two-point form
and then manipulate the equation into slope intercept with algebra
plush pulsar
kind canopy
and then manipulate the equation into slope intercept with algebra
alright thanks i was able to find an mx. For the B it’s where the line hits on the Y axis right?
scarlet sequoia
$\Slope$
woven radishBOT
Modus
timber pebble
alright thanks i was able to find an mx. For the B it’s where the line hits on t...
yea
but, it should just fall out
$y-y_1 = \frac{y_2-y_1}{x_2-x1}(x-x_1)$
woven radishBOT
jan Niku
kind canopy
but, it should just fall out
what do you mean by it should just fall out
timber pebble
what do you mean by it should just fall out
if you look here
timber pebble
**jan Niku**
here is the formula for a line given two points
I just distributed the right hand side, and grouped up terms
here, the intercept just falls out
$b = \frac{y_1-y_2}{x_2-x_1}x_1+y_1$
wait i did something wrong here
timber pebble
what do you mean by it should just fall out
dense jay
the y1 should be outside it, no?
woven radishBOT
jan Niku
dense jay
think that works
kind canopy
**jan Niku**
so b is 2318.75?
timber pebble
,calc (2001-2002)/(18.75-17.60) * 17.60 + 2001
woven radishBOT
Result:
1985.6956521739
I substituted the first coordinates (2001,17.6) to my equation and got -2,383.55 as my B would this be correct
ember estuary
help
ember estuary
dense jay
you saw nothing
dry oxide
!status
devout snowBOT
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
i need to factor that equation
dense jay
do you?
ember estuary
to either be just sin or cos
dense jay
i dont think you do
ember estuary
why?
ember estuary
dense jay
difference scenario
ember estuary
i need ot to look something like that
dense jay
you really dont
if you try to youre gonna end up with sin^3 somewhere and thats just messy
ember estuary
oh
dry oxide
yes
ember estuary
how would i go abt rhe first case
dense jay
if sin^2=0, what does sin=
ember estuary
at 0, 180 and 360 degree’s?
dry oxide
we talk general solutions in these cases
ember estuary
what does that mean?
dry oxide
these thing
ember estuary
also is that correct for the second case
dry oxide
ember estuary
so the first one?
dry oxide
yes
ember estuary
is that just 180 in radians
dry oxide
i mean its really hard to make u understand how to solve this if u dont know what general equation are
ember estuary
sorry
ember estuary
its just that i was never taugh that
dry oxide
why is it asked then
ember estuary
idk
ember estuary
the way i was taught was this way
dry oxide
i mean u can solve this question this way too
for the first case
that is when $\sin^2 \theta=0$
woven radishBOT
!Yajat!
ember estuary
symbol i mean
woven radishBOT
!Yajat!
ember estuary
also is that correct for the second case
is this correct
dry oxide
,w cos 5pi/3
ember estuary
ok so you get three values of theta from here
woven radishBOT
woven radishBOT
dry oxide
np
devout snowBOT
@ember estuary Has your question been resolved?
vivid hill
hey need help witb derivatives . with question B i got y’= y-xy’/ (x+y)^2 but the answer key says y/(x+y)^2 + x . how do i simplify to that
devout snowBOT
hey need help witb derivatives . with question B i got y’= y-xy’/ (x+y)^2 but th...
upper schooner
If you have $y' = \frac{y - xy'}{(x + y)^2}$ then you need to rearrange that for $y'$
woven radishBOT
@upper schooner
vivid hill
i tried multiplying by (1/ y-xy’) to get it to the other side but got stuck
i just need help with simplifying
upper schooner
Did you try multiplying by the denominator?
upper schooner
You're rearranging for y'
upper schooner
You can 
From the step before that, $y'(x+ y)^2 = y - xy'$, notice how both the left and right have $y'$ in them, might be good to get them on the same side in some way... (that isn't dividing by $y'$)
woven radishBOT
@upper schooner
upper schooner
Well done, said you'd get it
restive river
physics help
devout snowBOT
physics help
restive river
how do i find the expected slope with this info
and also microsoft excel if needed
vapid nest
how do i find the expected slope with this info
is this a lab?
restive river
yes
vapid nest
how do i find the expected slope with this info
what is the lab about
restive river
proving newtons second law
you dont really need to know though
i just wanna know how to find expected slope
low vessel
How did you get the acceleration values?
low vessel
proving newtons second law
Well, we really can’t “prove” stuff in physics
But use F=ma
For expected values
restive river
im told to use this formula: a = f * 1/m
low vessel
im told to use this formula: a = f * 1/m
Yes
restive river
basically the values put into y=mx+b
low vessel
That’s a rearrangement of f=ma
restive river
im told to use this formula: a = f * 1/m
can we use this formula
low vessel
It has a best fit line generation
low vessel
can we use this formula
Ok
So take the f and m values
Plug them in and find the a value
devout snowBOT
low vessel
have u done this before
Not this exact lab
devout snowBOT
Available help channel!
vivid hill
i’m back hoee 😘. i need help again. 1c..
devout snowBOT
i’m back hoee 😘. i need help again. 1c..
vapid nest
y’ = cos(x+y) x (1+y’)
wtf
vapid nest
y' = cos(x+y) + cos(x+y) y'
vivid hill
the what
vapid nest
💀
devout snowBOT
vapid nest
i’m so stupid
hope you have a good day
vivid hill
where’s ur supervisor
vapid nest
💀
devout snowBOT
Available help channel!
flat marlin
devout snowBOT
flat marlin
I think I'm missing something here
vapid nest
!status
devout snowBOT
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
pic incoming now
So I took the derivative like the other optimization problems usually would
But it isnt right
And idk from my memory
Marginal Profit is not the derivative of the cost but of the profit right?
zinc veldt
Marginal Profit is not the derivative of the cost but of the profit right?
it says marginal profit, so yeah I would think so
flat marlin
Okay
zinc veldt
otherwise it would be marginal cost
flat marlin
So is it possible
I take 363
and put it into the cost function
and somehow get a revenue function or make a profit function somehow?
zinc veldt
I would find a function for the profit and take the derivative
if you read closely it does tell you the revenus
revenue*
and profit = revenue - cost
flat marlin
revenue*
Can you give me a hint to where that is
OH
Dude
I see what happened
I thought that the top comment meant the number didnt exist
when the change was just for the wording for thousands of batteries
So 2.50 didnt exist for me
one sec
Okay so I managed to get the profit as a number
Now I'm debating on whether I made a mistake
or if I can use this number to get MP
Ooh wait
That
Boom
That's gotta be it
fervent sundial
devout snowBOT
fervent sundial
I made an expectation table
but it seems stupid
since probability should be 1 right?
sorry for bad handwriting, hard to write with a mouse but yes
devout snowBOT
@fervent sundial Has your question been resolved?
toxic cargo
is it $\frac{90/100} * \frac{11/20}$
fervent sundial
is it $\frac{90/100} * \frac{11/20}$
?
fervent sundial
the answer is probably this tbh
I just don't see how this works
k(0.9) + (20-k)(.4) = 11
toxic cargo
1 sec
fervent sundial
is it $\frac{90/100} * \frac{11/20}$
it's $\frac{90}{100} \cdot \frac{11}{20}$
toxic cargo
Yee
woven radishBOT
fervent sundial
that's definitely wrong
toxic cargo
Is it $\frac{90}{100}*\frac{11}{20}$
fervent sundial
No, that's definitely wrong
my answer is mostly right
I just don't think you can do that
toxic cargo
Idk bro its definetely not for a 9th grader
grizzled crest
devout snowBOT
devout snowBOT
@grizzled crest Has your question been resolved?
toxic cargo
Why are u putting time in x or y
Its constant right?
U should put degree of inclination in x ig
devout snowBOT
@grizzled crest Has your question been resolved?
steep glacier
haloo how to do this question? this is grade 11 question
devout snowBOT
haloo how to do this question? this is grade 11 question
restive river
haloo how to do this question? this is grade 11 question
find slope of tangent at x = alpha and x = beta using derivatives. say the slope of tangent at x = alpha is m1 and slope of tangent at x = beta is m2 then angle between them is given by the following formula
$\tan(\theta) = \frac{m_2 - m_1}{1 + m_1 m_2}$
woven radishBOT
notamy
brisk hare
What the hell were u thinking
did u think that alpha and beta are abscissa of different points on the parabola
do u know how to get equation of tangent from point outside parabola?
@steep glacier
steep glacier
like this?
brisk hare
then if we pass it throught (alpha,beta)then we would get a quadratic in m
whose roots would be the slopes of two tangents
brisk hare
**notamy**
then we use this formula
brisk hare
yes
steep glacier
ohhh thank you!!
brisk hare
wc
steep glacier
i need help again XD,how to do (ii)?
brisk hare
we just have to get area in terms of theta and then do some differentiation to get the maxima
supposing that A is(acostheta,bsintheta) and B is (acostheta,-bsintheta) then eqn of chord AB would be x=acostheta
and its length would be 2bsintheta
the height of triangle would be perpendicular distance of O from the chord
devout snowBOT
@steep glacier Has your question been resolved?
restive river
did u think that alpha and beta are abscissa of different points on the parabola
yep 💀
didn't go through the question properly, had a quick glance and understood it completely differently
steep glacier
we just have to get area in terms of theta and then do some differentiation to g...
is differentiation can find the maxima?
sorry i dont really understand it 
oh oh i get it
thank youuu
i found the another way to do it
brisk hare
ok
steep glacier
helpp me please
brisk hare
umm there is a property that states that 2 parallel tangents touch a circle at the ends of a diameter
so the distance would be 2r
steep glacier
omg okay i get it thank you
agile narwhal
can someone help me to calculate the probability of the first expression in the last line?
devout snowBOT
can someone help me to calculate the probability of the first expression in the ...
@agile narwhal Has your question been resolved?
Available help channel!
cunning beacon
devout snowBOT
cunning beacon
I feel really dumb but
how do i make x^2+y^2 in this equation become x+y
i cant just take the squareroots of both sides right?
sonic smelt
You can add 2xy to both sides since you know the value of xy
cunning beacon
to x^2+y^2=38 ?
radiant anvil
note that (x+y)^2=x^2+2xy+y^2
= (x^2-2xy+y^2) +4xy
sonic smelt
Yes
cunning beacon
how does adding 2xy to both sides gonna make it x+y
worthy talon
What do you have on the left when you add 2xy
sonic smelt
how does adding 2xy to both sides gonna make it x+y
On the left hand side you will have x^2 + 2xy + y^2 which is (x + y)^2