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Multiplication and Inverse Matrices

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Session Overview

Figure excerpted from 'Introduction to Linear Algebra' by G.S. Strang

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.

Session Activities

Lecture Video and Summary

Suggested Reading

  • Read Section 2.4 through 2.5 in the textbook.

Problem Solving Video

Check Yourself

Problems and Solutions

Work the problems on your own and check your answers when you're done.

Further Study

Matrix Multiplication

  • An interactive demo (with voiceover explanation) on Matrix Multiplication, A = LU, and PA = LU

 

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