The determinant of a matrix is a single value.
The determinant of a matrix [A] is a single value.
AD=a11a21a31a12a22a32a13a23a33=∣A∣=a11a21a31a12a22a32a13a23a33=a11(a22a33−a23a32)−a12(a21a33−a23a31)+a13(a21a32−a22a31)