设dl,a2,a3为三维向量,则对任意常数k,Z,向量组al+ka3,a2+la3线性无关是向量组a1.a2.a3线性无关的( )。A、必要非充分条件 ...

作者: tihaiku 人气: - 评论: 0
问题 设dl,a2,a3为三维向量,则对任意常数k,Z,向量组al+ka3,a2+la3线性无关是向量组a1.a2.a3线性无关的( )。
选项 A、必要非充分条件 B、充分非必要条件 C、充分必要条件 D、既非充分也非必要条件
答案 A
解析 A2=Alk+A2/=0。从而al+ka3,a2+la线性无关:反过来不成立线性无关时线性无关,但a1,a2,a3线性相关。

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