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设A为三阶方阵，｜A｜=3，则｜-2A｜=()《》()
分类: 数学2 (军队文职)
发布时间: 2023-11-03 09:29
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设A为三阶方阵，｜A｜=3，则｜-2A｜=()《》()
A.24
B.-24
C.6
D.-6
正确答案是B
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