若
=
是平面α的一个法向量,且
=(-1,2,1),
=
均与平面α平行,则向量
=________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db6cbe42c0213f0c6b16d60de8cd7333.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee437e6ff470c2f67b8429f57b90ae37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a87c03982d3af82c243fe0cca504f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aad1edabb96232ae1a94900dc5de9bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
20-21高二·全国·课后作业 查看更多[3]
更新时间:2021-08-27 12:23:55
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【知识点】 求平面的法向量
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较易
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【推荐1】已知点力
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填空题-单空题
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解题方法
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