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问题详情

设向量α1=(-1,4),α2=(1,-2),α3=(3,-8),若有常数a,b使aα1-bα2-α3=0,则( )

A、a=-1,b=-2

B、a=-1,b=2

C、a=1,b=-2

D、a=1,b=2

时间：2021-09-01 21:01 关键词：青书学堂河北建筑工程学院电气工程及其自动化线性代数

答案解析

A

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