Question

define unit and square matrix with example​

Answer 1

Answer:

In mathematics, a square matrix is a matrix with the same number of rows and columns. An n-by-n matrix is known as a square matrix of order n. Any two square matrices of the same order can be added and multiplied.

The unit matrix is every n x n square matrix made up of all zeros except for the elements of the main diagonal that are all ones. For example: It is indicated as In where n representes the size of the unit matrix