Talk:PDE:Laplaces Equation

Solution in 3D co-ordinate system.

I think that the solution to the following Laplace equation in spherical co-ordinate system is missing.

$\Delta u = \frac{1}{r^2}(r^2 u_r)_r + \frac{1}{r^2 sin\theta}(sin\theta u_\theta)_{\theta}+\frac{1}{r^2 (sin\theta)^2}u_{\phi\phi}=0\,$

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