Introduction The purpose of this computer assignment is to get acquainted
with the PDE Modeler in Matlab by performing convergence studies for a PDE
eigenvalue problem.
We let $\Omega \subset \mathbb{R}^2$ be a domain with boundary $\partial \Omega$ and consider the following
PDE eigenvalue value problem: Find $u: \Omega \rightarrow \mathbb{R}$ and $\lambda \in \mathbb{R}^+$ such that:
$$
\begin{cases}
-\Delta u = \lambda u \text{ in } \Omega, \\
u = 0 \text{ on } \partial \Omega.
\end{cases}
$$
Task 1 (Analytical solution) Let the domain be the unit square $\Omega = [0, 1]^2$
and derive analytical expressions for the eigenvalues $0 < \lambda_1 < \lambda_2 \leq ...$ and the
corresponding normalized (in $L^2(\Omega)$) eigenfunctions.