Find the value of .
Calculate each of the determinants individually and then multiply.
For a matrix , the determinant of the matrix, is defined as .
For a matrix , find the determinant by using the expansion of the determinant by the first row:
So, for this matrix:
Calculate each of the determinants individually:
The second determinant is not required as it is multiplied by 0.
Now substitute these values back into the expression for the determinant of the matrix:
Finally find the product of the determinant of the matrix and the matrix: