Precalculus by Richard Wright

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Chapter 09: Matrices

Matrices are a way to organize information in a rectangular array. For example, computer images are essentially matrices containing the color code for each pixel of the image. Matrix operations can also be used to encode and decode messages using a Hill cipher though it is relatively easy to break if part of the plain text is known.

9-01 Matrices and Systems of Equations

9-02 Gaussian Elimination

9-03 Matrix Operations

9-04 Inverse Matrices

9-05 Determinants of Matrices

9-06 Applications of Matrices