已知向量
在基底
下的坐标为
,则向量
在基底
下的坐标是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b1bfbd2ef51eaeb6e686e27cc95638e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8d2051594370095e72e173fd95888a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cade3ebee1dd3d0a4752b18833e6cb96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b1bfbd2ef51eaeb6e686e27cc95638e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34a60b2dbe46bd36c675ed9182a632ef.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2022-10-12 09:07:56
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【推荐1】已知
三点不共线,对平面
外的任一点
,下列条件中能确定点
共面的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b35780e940f1aa9b42926f33904128a.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
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【推荐2】在四面体
中,
,Q是
的中点,且M为PQ的中点,若
,
,
,则
( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4278c0911e7df78965e78cff69cac5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a330f445858f910363be34fbed77e8e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/420ad6159fc091d6a5ffddf0676d2662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c2e7e9fd8519fd1c293cc577408263.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a40f8ef7e3af00c41f85a20578afdb57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5f9fd2981307b65ab58700ca5c70eee.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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【推荐2】已知M(1,2,3),N(2,3,4),P(-1,2,-3),若
且
,则Q点的坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f13175eb7f7d5b667bdba796ac5d7762.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9633ab9c758914b2709c50221930c181.png)
A.(2,5,0) | B.(-4,-1,-6)或(2,5,0) | C.(3,4,1) | D.(3,4,1) 或(-3,-2,-5) |
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