题目内容：
设A为三阶矩阵,且|A^-1|=3,则|-3A|=() A.-9 B.-1 C.-1 D.9
参考答案：
选择题：设A为三阶矩阵,且|A^-1|=3,则|-3A|=() A.-9 B.-1 C.-1 D.9
- 题目分类：河南财经政法大学-金融学-线性代数
- 题目类型：选择题
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