Question: 3 A matrix is said to be upper triangular if for i > j, a ij = 0. Show that the determinant of any upper

3 A matrix is said to be upper triangular if for i > j, a_ij=

0. Show that the determinant of any upper triangular 3 3 matrix is equal to the product of the matrix’s diagonal elements. (This result is true for any upper triangular matrix.)

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