$\"\"$

The matrix is $\"\"$ .

Find $\"\"$ .

Since $\"\"$ is the element in row $\"\"$ , column $\"\"$ .

Observe the matrix $\"\"$ ,

It has $\"\"$ rows and $\"\"$ columns.

The dimensions of matrix are not equal.

There is no element of $\"\"$ . $\"\"$

There is no element of $\"\"$ .