https://ocw.mit.edu/courses/18-06-linear-algebra-spring-2010/resources/lecture-3-multiplication-and-inverse-matrices/

 

Lecture 3: Multiplication and inverse matrices | Linear Algebra | Mathematics | MIT OpenCourseWare

This lecture looks at matrix multiplication from five different points of view. We then learn how to find the inverse of a matrix using elimination, and why the Gauss-Jordan method works. These video lectures of Professor Gilbert Strang teaching 18.06 were

ocw.mit.edu

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