Applied Finite MathematicsXYZ Homework Edition

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Chapter 2: Matrices

In this chapter, you will learn to:

  1. Do matrix operations.
  2. Solve linear systems using the Gauss-Jordan method.
  3. Solve linear systems using the matrix inverse method.
  4. Do application problems.

In this section you will learn to:

  1. Add and subtract matrices.
  2. Multiply a matrix by a scalar.
  3. Multiply two matrices.

A matrix is a rectangular array of numbers. Matrices are useful in organizing and manipulating large amounts of data. In order to get some idea of what matrices are all about, we will look at the following example.

Adapted from Applied Finite Mathematics by Rupinder Sekhon (De Anza College), originally published by OpenStax CNX (cnx.org, collection col10613) under CC BY 3.0 (creativecommons.org/licenses/by/3.0/); that original material remains under CC BY 3.0. Includes material adapted from Applied Finite Mathematics (Sekhon and Bloom), LibreTexts, under CC BY 4.0. Changes were made. This adaptation by XYZ Homework is licensed under CC BY 4.0. License: CC-BY-4.0.

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