Discrete Poisson equation: Difference between revisions
→Example
(short desc) 

\vec{b} =
\left[\begin{array}{l}
\Delta x^2 (g_{22} + u_{12} + u_{21}) \\
\Delta x^2 g_{32} + u_{31} ~~~~~~~~ \\
\Delta x^2 g_{42} + u_{52} + u_{41} \\
