首页/ 题库 / [单选题]设 3 阶方阵 A=(α1,α2,α3)的答案

设 3 阶方阵 A=(α1,α2,α3),其中αi(i=1,2,3)为 A 的列向量,若|B|=|(α1+2α2,α2,α3)|=6,则|A|=( )

单选题
2021-07-17 23:20
A、-12
B、-6
C、6
D、12
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正确答案
C

试题解析

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