# Matrix Calculator (Overview and Demo)

Get familiar with the matrix calculator.

## We'll cover the following

Before making the matrix calculator, let’s briefly recap matrices and their arithmetic.

## Matrix

In mathematics, a **matrix** is a rectangular array of numbers, symbols, or expressions arranged in rows and columns. Matrices are often used to represent linear transformations and systems of linear equations. They have many applications in various fields, such as physics, engineering, economics, computer graphics, and data science/machine learning.

A matrix is usually denoted by a capital letter, such as

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