BSW Math 
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Solution of Laplace and Poisson Differential Equations 
This script gives the numirical solution of Laplace and Poisson equation Δ u(x,y)=f(x,y) where f(x,y)=0 for Laplace equation. The calculation is carried by LU factorization 
This is an example for output data in graph mode of boundary value problem Δ U(x,y)==x*y, U(x,y)=0 at all boundaries. 
