- #1
glmuelle
- 5
- 0
Hi
Verify, that
[tex] u(\vec{x}) := - \frac{1}{2 \pi} \int \limits_{\mathbb{R}^2} \log ||\vec{x} - \vec{y} || f(\vec{y}) d \vec{y} [/tex]
is the general solution of the 2 dimensional Poisson equation:
[tex] \Delta u = - f [/tex]
where [tex] f \in C^2_c(\mathbb{R}^2) [/tex] is differentiable twice and has compact support.
My attempt would be to swap integral and Laplace operator but I know it's wrong to just do that...
Can anyone help me please? Thanks!
Gloria
Homework Statement
Verify, that
[tex] u(\vec{x}) := - \frac{1}{2 \pi} \int \limits_{\mathbb{R}^2} \log ||\vec{x} - \vec{y} || f(\vec{y}) d \vec{y} [/tex]
is the general solution of the 2 dimensional Poisson equation:
[tex] \Delta u = - f [/tex]
where [tex] f \in C^2_c(\mathbb{R}^2) [/tex] is differentiable twice and has compact support.
Homework Equations
The Attempt at a Solution
My attempt would be to swap integral and Laplace operator but I know it's wrong to just do that...
Can anyone help me please? Thanks!
Gloria