Classification of PDEs into Elliptic, Hyperbolic and Parabolic

In this tutorial I will teach you how to classify Partial differential Equations (or PDE's for short) into the three categories. This is based on the number of real characteristics that the PDE has. The class of PDE has important consequences. We will also do two worked examples to ensure that you are following the theory. It's really very simple. The technique is very simple and just involves applying the discriminant (think quadratic equation), B^2-4AC with the coefficients being determined by comparing with a reference equation.