• 2022-06-29
    设A, B, C均为n 阶方阵, 则下列结论一定正确的是[ ].
    A: 若 AB = AC, 则 B = C.
    B: 若 AB = AC 而且 A ¹ O, 则 B = C.
    C: A(BC) = (AC)B.
    D: [img=138x25]1803933966228c8.png[/img]
    E: [img=194x25]180393396e68730.png[/img]