Question

What is a matrix simple definition?

Answer 1

Matrix:

A matrix is a rectangular arrangement of a collection of numbers into a fixed number of rows and columns.

When the elements are arranged in a matrix horizontally, it forms the rows of a matrix.

When the elements are arranged in a matrix vertically, it forms the columns of a matrix.

The matrix of order $m\times n$ is: where $m,n$ represent number of rows and column respectively.

$A=\left[\begin{array}{ccccc}{a}_{11}& a_{12}& a_{13}& \dots & a_{1n}\\ a_{21}& a_{22}& a_{23}& \dots & a_{2n}\\ ⋮& ⋮& ⋮& ⋮& ⋮\\ a_{m1}& a_{m2}& a_{m3}& \dots & a_{mn}\end{array}\right]$