det - determinant
det(X) ( m*10^e is the determinant of the square matrix X .
For polynomial matrix det(X) is equivalent to determ(X) .
For rational matrices det(X) is equivalent to detr(X) .
det computations are based on the Lapack routines DGETRF for real matrices and ZGETRF for the complex case.
x=poly(0,'x'); det([x,1+x;2-x,x^2]) w=ssrand(2,2,4);roots(det(systmat(w))),trzeros(w) //zeros of linear system A=rand(3,3); det(A), prod(spec(A))