Let A be a 4×4 matrix, the determinant of A is 1/3, and [img=21x20]1803c4e4937ebc3.png[/img] the adjoint matrix of A, then [img=115x27]1803c4e49b725a2.png[/img]=________. A: 1 B: 3 C: 6 D: 9
Let A be a 4×4 matrix, the determinant of A is 1/3, and [img=21x20]1803c4e4937ebc3.png[/img] the adjoint matrix of A, then [img=115x27]1803c4e49b725a2.png[/img]=________. A: 1 B: 3 C: 6 D: 9
Let A be a n×n matrix (n ≥ 3) and A∗ is adjoint of A. Suppose that k [img=14x23]17de933034c9caf.png[/img] 0,±1, then (kA)∗ = ( ). A: kA∗. B: kn−1A∗. C: knA∗. D: k−1A∗.
Let A be a n×n matrix (n ≥ 3) and A∗ is adjoint of A. Suppose that k [img=14x23]17de933034c9caf.png[/img] 0,±1, then (kA)∗ = ( ). A: kA∗. B: kn−1A∗. C: knA∗. D: k−1A∗.
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