Solving a time-independent 2D Schrödinger equation using PDE Toolbox
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I want to solve the following PDE eigenvalue problem,
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/833195/image.png)
inside a square with Dirichlet boundary conditions on its edges, say for the first 250 eigenvalues and eigenfunctions. I don't want to implement this problem using the finite difference method, but rather prefer to use the already available PDE toolbox in MATLAB. When I looked at the examples presented in the MathWorks documentations for the PDE toolbox, I couldn't understand how to implement this problem using the PDE toolbox.
My question is; how can I implement this problem in MATLAB using the PDE toolbox? After that how can I access the eigenfunctions found by the code to take certain integrals involving these eigenfunction?
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