设A,B都是n阶方阵，AB=A+B, 则 [img=143x27]180388527ae0e14.png[/img]
举一反三
- 设A,B都是n阶方阵，AB=A+B, 则[img=127x27]180386d6dce40d4.png[/img]
- 设A,B都是n阶方阵，若AB=A+B,则[img=127x27]180386d6d9bbe85.png[/img]
- 设 A，B 都是 n 阶方阵，则一定有（ ）. A: |A+B|=|A|+|B|. B: [img=276x42]18038e91fedc784.png[/img] C: |AB|=|A||B|. D: [img=252x49]18038e92096b701.png[/img]
- 设A,B均为n阶方阵，则必有( ) A: |A+B|=|A| +|B| B: AB=BA C: |AB|=|BA| D: [img=252x59]18035a0a71c851c.png[/img]
- 设A，B均为n阶方阵，则必有 A: |A+B|=|A|+|B| B: AB=BA C: |AB|=|BA| D: [img=161x27]1803897fde70e83.png[/img]