# 14.2.3: Matrices and how to use them

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Matrices are a system to organize numbers to make transforms easier, including solving a system of equations.

• 14.2.3.1: Matrices and Matrix Operations
To solve a systems of equations, we can use a matrix, which is a rectangular array of numbers. A row in a matrix is a set of numbers that are aligned horizontally. A column in a matrix is a set of numbers that are aligned vertically. Each number is an entry, sometimes called an element, of the matrix. Matrices (plural) are enclosed in [ ] or ( ), and are usually named with capital letters.
• 14.2.3.2: System of equations and Matrices
Here we do a quick section to discuss how to use matrix multiplication in a programming language to solve a system of equations.

14.2.3: Matrices and how to use them is shared under a not declared license and was authored, remixed, and/or curated by LibreTexts.