Question

define null matrix and square matrix with example​

Answer 1

Answer:

Null or zero Matrix: Whether A is a rectangular or square matrix, A - A is a matrix whose every element is zero. The matrix whose every element is zero is called a null or zero matrix and it is denoted by 0. Thus for A and 0 of the same order we have A + 0 = A. For example, [00] is a zero matrix of order 1 × 2.

Answer 2

Answer:

Null or zero Matrix: Whether A is a rectangular or square matrix, A - A is a matrix whose every element is zero. The matrix whose every element is zero is called a null or zero matrix and it is denoted by 0. Thus for A and 0 of the same order we have A + 0 = A. For example, [00] is a zero matrix of order 1 × 2.

A square matrix is an n × n matrix; that is, a matrix having the same number of rows as columns. For example, the following matrices are square: A = 5 0 9 − 2 and B = 1 2 3 4 5 6 7 8 9 .