mainly need help on the matlab portion but if i can get help for part 1 and 2 would me amazing thank you in advance

Project 10: Finite Difference Approximation Being able to analytically calculate the solution to a given partial differential equation is often a much more difficult (if not impossible) task than presented here. Possible challenges include irregular domains and strange boundary conditions. In those cases, numerical techniques are often used to approximate the solution to a PDE. The most basic of such methods is the finite difference method. To illustrate the method, consider the Dirchlet Poisson equation in one dimension given by -u" =f, 0