Det(M:MAT)

the resulting type depends on the entries of the matrix.

the determinant of a matrix

This function returns the determinant of the matrix M.  The resulting
type depends on the types of the entries of the matrix.

Use R ::= Q[x];
M := Mat([[x,x^2],[x,x^3]]);
Det(M);
x^4 - x^3
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Det(Mat([[1,2],[0,5]]));
5
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• Minors