Question

define unit matrix and give one example ​

Answer 1

$\huge{\textbf{\underline{Answer:-}}}$

A square matrix is called a unit matrix if all diagonal elements are zero and all diagonal elements unity. A unit matrix is also known as the identity matrix.

Every identity matrix and null matrix is a scaler matrix and every scaler matrix is a diagonal matrix.

Answer 2

Step-by-step explanation:

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: ... The unity matrix in linear algebra works a little bit like the number 1 in normal algebra so that if you multiply a matrix by the unit matrix you get the same initial matrix!