Partial Differential Equations

In previous chapters, we have explained how ordinary differential equations can be solved using Laplace Transforms. In Chapter 4, Fourier series were introduced, and the important property that any reasonable function can be expressed as a Fourier series derived. In this chapter, these ideas are brought together, and the solution of certain types of partial differential equation using both Laplace Transforms and Fourier Series are explored. The study of the solution of partial differential equations (abbreviated PDEs) is a vast topic that it is neither possible nor appropriate to cover in a single chapter. There are many excellent texts (Sneddon (1957) and Williams (1980) to name but two) that have become standard. Here we shall only be interested in certain types of PDE that are amenable to solution by Laplace Transform.