Question: (a) If is an upper triangular block matrix, where A11 and A22 are square matrices, then det(A) = det(A11) det(A22). Use this result t0 evaluate

(a) If
(a) If is an

is an "upper triangular" block matrix, where A11 and A22 are square matrices, then det(A) = det(A11) det(A22). Use this result t0 evaluate det(A) for

(a) If is an

(b) Verify your answer in part (a) by using a cofactor expansion to evaluate det(A).

AAz 0 A22 64522 53365 21-123 -13000 24-00)

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