Numerical Integration - Guassian Quadrature — Lesson 4

In this lesson, it is shown how the integration is performed to evaluate the different terms of the weak form. The integration can never be as easy as shown in previous lessons and there is a need to have a different integration approach. Numerical integration is the approach and when it is needed is discussed. Gaussian quadrature is discussed along with the quadrature rule. The use of Gaussian integration with different numbers of integration points is shown.