Question

What is the determinant of matrix |-8|?​

Answer 1

Given:

The matrix is $[-8]$.

To find:

The determinant of given matrix, i.e, $|-8|$.

Solution:

If a matrix is A of order $1\times 1$, then the value of the determinant of that matrix is equal to the element of that matrix.

For example: Let A be the matrix of order $1\times 1$.

$A=[a]$

Then,

$|A|=a$

The given matrix is $[-8]$. So, the  determinant of given matrix, i.e, $|-8|$, is

$|-8|=-8$

Therefore, the value of determinant of given matrix is -8.