(* Linear Algebra: Theory and Applications *)
(* Ward Cheney & David Kincaid *)
(* JBPub.com (c) 2008  *)
(* File: exp4113.mat *)
(* Example 4.1.13 Mathematical Software *)

A = {{1,3,7,2},{4,-2,1,5},{3,1,2,0},{1,9,15,-1}}
Det[A]