DET  DET Determinant of a Matrix


Usage
 
 Calculates the determinant of a matrix.  Note that for all but
 very small problems, the determinant is not particularly useful.
 The condition number cond gives a more reasonable estimate as
 to the suitability of a matrix for inversion than comparing det(A)
 to zero.  In any case, the syntax for its use is
 
   y = det(A)
 
 where A is a square matrix.
 