Mathematics
8 Online
OpenStudy (tmagloire1):
PLEASE HELP AP CALCULUS AB
http://prntscr.com/bd35z9
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OpenStudy (tmagloire1):
@ganeshie8 @Preetha @Mehek14
OpenStudy (tmagloire1):
@KendrickLamar2014 @jigglypuff314 @nincompoop
ganeshie8 (ganeshie8):
Hi
OpenStudy (tmagloire1):
HI!
ganeshie8 (ganeshie8):
You could literally cross multiply here
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OpenStudy (tmagloire1):
dx(x^2) = dy(y^2)?
OpenStudy (tmagloire1):
dx(x^2) = dy(0^2)
dx(x^2) = dy
ganeshie8 (ganeshie8):
Yes
Next integrate both sides
OpenStudy (photon336):
yeah then integrate both sides after you separate dx and dy then plug in the initial condition of y(0) to find C.
OpenStudy (tmagloire1):
Wait integrate my first response of the second one
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ganeshie8 (ganeshie8):
No
Integral of y^2 with respect to y is not 0
OpenStudy (tmagloire1):
that side would be y^3
ganeshie8 (ganeshie8):
y^3/3
OpenStudy (tmagloire1):
oh ok, but that would just be one side right? do we have to do the same for x?
ganeshie8 (ganeshie8):
Yes
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OpenStudy (tmagloire1):
it would be x^3/3
ganeshie8 (ganeshie8):
Do yoy get
x^3/3 = y^3/3 + C
OpenStudy (tmagloire1):
yup so then how do we put y(0)=2?
x^3/3 = y^3/3 + C
ganeshie8 (ganeshie8):
Plugin
x=0
y=2
and solve C
OpenStudy (tmagloire1):
0^3/3 = 2^3/3 + C
0 = 8/3 + C
C= -8/3
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ganeshie8 (ganeshie8):
Yes
OpenStudy (tmagloire1):
Thank you!
ganeshie8 (ganeshie8):
Yw