Laplace equation, FEM

Does anybody know where I could find a Matlab function which prepares the system matrix

and the right-hand side vector of the finite difference method for solving the Laplace

equation? The area is a polygon which may have concave sections. The boundary with the

Dirichlet conditions is specified. Any suggestions would be gratefully appreciated.

Answer 1

[KSSV]

This is the book for you:

https://www.amazon.in/Finite-Element-Mechanical-Aerospace-Engineering/dp/0849300967

[Peter Nave]

Thank you very much!