Every square matrix is associated with a particular expression which is called the determinant. The determinant of a square matrix A is denoted by det A or|A|. In determinant, horizontal lines and Fertical lines are called rows and columns respectively, as in matrix.

A determinant of order nxn is represented as, A =

a 11 a 12 013

din

a 21

a 23

a 22

aan

:

:

:

:

:

a ni

ann

an3

a n2

..

A matrix is an arrangement of numbers and it has no fixed value but a determinant is a number and it has a fixed value.