A matrix is a rectangular array of numbers enclosed in large brackets.
(A) Rows, Columns and Order of Matrices
1. A matrix which has m rows and n columns is known as a matrix of order m × n.
2. A row matrix is a matrix which has only one row.
3. A column matrix is a matrix which has only one column.Example:
4. A square matrix is a matrix which has equal number of rows and columns.