Determinant of a matrix in Matlab

Determinant tells us values that are useful in systems of linear equations, it also helps us to find inverse of a matrix, also useful in calculus and more, this is calculated as :
matrix
(4 * 5) – (8 * 3)

Example

>> a = [4 3; 8 5]

a =

     4     3
     8     5

>> det(a)

ans =

    -4
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