I want is to get the solution for the linear system AU = F using the finite element method which is already computed mathematically and attached. The problem is to get the solution of 2D the poisson equation (the elliptic boundary value problem) : - (u_xx + u_yy) = f(x,y), u = 0 on the boundary of the domain Omega. I need to make sure of two things: I need you to create the code for me for the problem I sent you so that I can change the boundary conditions. Sometimes I use the dirichlet boundary conditions (use it now in the problem) and sometimes I use mixed boundary conditions Please check attachment and let me know if any question.
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