# Poisson Lapalace

Hello every one and thank you in advance,
I'm try to solve 3D Poisson equation analytically not numerically, but the help i found has the boundary conditions equal to zero, there is anyone to have a step by step process to solve Poisson and/ or Laplace 3D equation where the boundary conditions are not zero moreover those condition are depends on x, y, and z,

thank you again

(∂^2 ψ (x,y,z))/(∂^2 x)+(∂^2 ψ (x,y,z))/(∂^2 y)+(∂^2 ψ (x,y,z))/(∂^2 z) =A(x,y,z)e^(ψ(x,y,z))