设A、B均为n阶非零矩阵,且AB=0,则R(A)、R(B)满足( )。A.必有一个等于0 B.都小于n C.一个小于n, 一个等于n D.都等于n

作者: tihaiku 人气: - 评论: 0
问题 设A、B均为n阶非零矩阵,且AB=0,则R(A)、R(B)满足( )。
选项 A.必有一个等于0 B.都小于n C.一个小于n, 一个等于n D.都等于n
答案 B
解析 提示:由已知可知R(A)+R(B)≤n。

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