Saturday

April 19, 2014

April 19, 2014

Posted by **Aoi** on Friday, June 19, 2009 at 9:04am.

okay, i know the first part is dy/dx=Ake^kx

but how do i do the second part? find A and k?

- Integration? -
**bobpursley**, Friday, June 19, 2009 at 9:17amif y=Ake^kx then

Ake^kx -3Ae^kx=4e^2x

dividing by e^kx

Ak-3A=4(e^(2x-kx))

If A,k are constants, then the exponential term has to go to zero (Ak-3A) has to equal a constant...

or k=2 to do that, then

2A-3A=4 which solves A

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