设B是三阶非零矩阵,已知B的每一列都是方程组 的解,则t等于 A.0 B.2 C.1 D.-1

作者: tihaiku 人气: - 评论: 0
问题 设B是三阶非零矩阵,已知B的每一列都是方程组 的解,则t等于 A.0 B.2 C.1 D.-1
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答案 D
解析 提示:已知条件B是三阶非零矩阵,而B的每一列都是方程组的解,可知齐次方程Ax=0有非零解。所以齐次方程组的系数行列式为0,

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