Question: Show by a column (row) expansion that if Is upper (lower) triangular, then det(A) = (11(22 . . . (nn. A=[w]

Show by a column (row) expansion that if
Show by a column (row) expansion that if Is upper (lower)

Is upper (lower) triangular, then det(A) = (11(22 . . . (nn.

A=[w]

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