# Finding Green's function for diffusion equation

1. Dec 8, 2014

### Glomerular

1. The problem statement, all variables and given/known data
Find the solution for:
$$({\partial{}_t}^2 -D \Delta^2)G(\vec{r},t;\vec{r}_o,t_o)=\delta(\vec{r}-\vec{r}_o)\delta(t-t_o)$$
In two dimensions.
2. Relevant equations

3. The attempt at a solution
Am I supposed to use bessel eqs? I'm kind of stuck in starting the problem :L

2. Dec 8, 2014

### Orodruin

Staff Emeritus
I suggest using Fourier and/or Laplace transforms.