Question8. Let be invertible matrices. The following conclusion is correct ( ).
A.
B.
C.
D.
9. The cofactor of matrix is .
A. 5
B. -1
C. -5
D. 1
10. Let be an matrix and . Then .
A.
B.
C.
D. 4
III. Solve the questions. (Questions 11 to 15 carry 10 marks each. 50 marks Score totally.)
11. Let . Compute .
Studdy Solution
Multiple Choice: C, A, C.
Cofactor: 5
Determinant:
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