how to calculate the determinant of a matrix in matlab

To calculate the determinant of a matrix in Matlab, you can use the built-in function det. Here's an example of how to do it:

main.m
A = [1 2; 3 4];      % define a 2x2 matrix
det(A)               % calculate and print the determinant
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This will output [-2], which is the determinant of the matrix A.

Note that the det function only works for square matrices. If your matrix is not square, you can't calculate the determinant.