Introduction of double integration.

Description
Integration of a function of a single variable is defined as the area below the graph of the function in a certain interval where as double integration is applicable for a function with two variables. The volume of the graph over a certain region is known as double integral. These definitions are explained more clearly through figures and solved examples by professor Denis Auroux in ths video.
Prof. Denis Auroux, Maths, Fall 2007,18.02 Multivariable Calculus: 16: Double Integrals, Massachusetts Institute of Technology: MIT OpenCourseWare),http://ocw.mit.edu (Accessed September 19,2011). License: Creative Commons BY-NC-SA:http://ocw.mit.edu/terms/#cc