N particles diffuse in one dimension in the potential U(x) = ax^2, with a > 0.
Find steady-state concentration, c0(x).

No idea how to solve this. Any equations?

 

Are you sure that is supposed to be "ax^2" and not "∂x^2?"

http://en.wikipedia.org/wiki/Diffusion_coefficient

 

Yes, it's ax^2.

 

Here's the answer

I still don't understand HOW they obtain that expression...