Page 1 of 1

determinant of a triangular matrix

PostPosted: Thu 19 May, 2011 15:54
by barnamah
Find the determinant of the matrix bellow:


Because this is a triangular matrix, we multiply the diagonal values together which are located from top left going to bottom down. They are (1)(5)(2)(-1)=-10
and that is the answer which is -10.