# Partial differential equation problem

1. Oct 26, 2013

### sam topper.

1. The problem statement, all variables and given/known data
using the method of separation of variables, solve ∂u/∂x=4∂u/∂y, where $u=3e^-y - e^-5y$ when x=0.

2. Relevant equations

3. The attempt at a solution
let u(x,y)=X(x)Y(y)
=XY.
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

2. Oct 26, 2013

hi sam!
good

what next?