Multiplication and Inverse Matrices

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Session Overview

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

• Watch the video lecture Multiplication and Inverse Matrices (00:46:49)

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  Multiplication and Inverse Matrices

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• Read the accompanying lecture summary (PDF)
• Lecture video transcript (PDF)

Suggested Reading

• Read Section 2.4 through 2.5 in the textbook.

Problem Solving Video

• Watch the recitation video on Inverse Matrices (00:08:24)

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  Inverse Matrices

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• Recitation video transcript (PDF)

Check Yourself

Problems and Solutions

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

• Problems (PDF)
• Solutions (PDF)

Further Study

Matrix Multiplication

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

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