Question

A,B均为n阶方阵,且k不等于0,则正确的是 A |A+B|=|A|+|B| B |KA|=K|A| C |AB|=|B

Answer 1

(C) 正确.

A 常见错误

B |kA| = k^n|A|

C |AB| = |A||B| = |B||A| = |BA| 对

D |A*| = |A|^(n-1)