已知
、
是两个不共线向量,设
,
,
,若
、
、
三点共线,则实数
的值等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91a9cb32a25c2a8bb99f75633b4cd5ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ece7ff6a365f1489165649106b9a1010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5552a58649a8722a5a5c9d611a305f45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2017-07-21 08:38:31
|
相似题推荐
单选题
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较易
(0.85)
【推荐1】在正方形ABCD中,M是BC的中点.若
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e1978a863dc4a74485813a840646fdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/013bb0e8426850af4d19a60e8445a042.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec33b8270e7493da5408ddc3e9848e2.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
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名校
【推荐2】下列命题中正确的有
(1)
;(2)
;(3)
;(4)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b80cd8eb758f957af43f0b25315134be.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f42ad8d5de3b1de7aa0f29cf0e89d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b65250be027869edb5873d637f0ef99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea3856445d7e0aa0c9217b7e4e2b06fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b80cd8eb758f957af43f0b25315134be.png)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
单选题
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较易
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解题方法
【推荐1】设向量
,且向量
与
共线,则锐角
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be261b319c306c4b9d2013dc3b28d666.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
解题方法
【推荐2】已知向量
,
,若
,则实数m的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d9d47664671d0c472713da82e420ac0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbbf989b67b261b18e1c2be6ea158cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03481e6a73207be03fdbc1f8e9965b37.png)
A.1 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
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较易
(0.85)
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解题方法
【推荐1】在
中,
,
,
,D,E分别是
边上的三等分点,则
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c14a66ed4bd66df65bc42c4ac1ed15c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b64af28c24767dd9a64e49e5948c806.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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A.6 | B.![]() | C.8 | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
解题方法
【推荐2】如图,在梯形中,
,
,设
,
,则
( )
A.![]() | B.![]() |
C.![]() | D.![]() |
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