Cramer's Rule, Inverse Matrix, and Volume -- Lecture 20. Using Cramer's Rule, determinants and finding inverses and the volume of a box with matrices.
Gilbert Strang, 18.06 Linear Algebra, Spring 2005. (Massachusetts Institute of Technology: MIT OpenCourseWare), http://ocw.mit.edu (Accessed November 22, 2008). License: Creative Commons BY-NC-SA.
More info at: http://ocw.mit.edu/terms