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Results tagged with poisson
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user 1738
Referring to a time independent partial differential equation of the form $\nabla^2u=f$
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Writing the Poisson equation finite-difference matrix with Neumann boundary conditions
I think you are on the right way. If you correct your errors, it will look very similar to http://www.math.toronto.edu/mpugh/Teaching/Mat1062/notes2.pdf.
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