Sunday

February 1, 2015

February 1, 2015

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

**Answer this Question**

**Related Questions**

brief calculus - I found that c=1 but i can't get the other two questions The ...

calculus - A quantity has the value P at time t seconds and is decreasing at a ...

calculus - A quantity has the value P at time t seconds and is decreasing at a ...

Competetion help on Integration - If there four options are given to a Defenite ...

Math PIZZAZZZ - how does a rodeo star get around?? well if you cant give me an ...

very complicated maths - Hey guys, need some help with a question ive been stuck...

maths - An initial-value problem is given by the differential equation, f(x,y...

physics - 1.The potiential energy of a particle varies with distance x from a ...

math - An initial-value problem is given by the differential equation, f(x,y) = ...

maths - y is partly constant and partly varies as the cube of x given that whenx...