determinant of a triangular matrix

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determinant of a triangular matrix

Postby barnamah » Thu 19 May, 2011 15:54

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.
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