1 . 将向量
绕原点O逆时针方向旋转
得到
,则![](https://img.xkw.com/dksih/QBM/2016/7/22/1572935431061504/1572935436238848/STEM/387aec14f7394d2888b508e3aa79bc01.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572935431061504/1572935436238848/STEM/9b4023249624484ab89e1f8566bcfe3b.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572935431061504/1572935436238848/STEM/95c4a72068a64b40aebcfcd02adb794e.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572935431061504/1572935436238848/STEM/cb4d16f734284a6496fca1927bf778c6.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572935431061504/1572935436238848/STEM/387aec14f7394d2888b508e3aa79bc01.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2 . 已知点
为
内一点,且
则![](https://img.xkw.com/dksih/QBM/2016/4/12/1572590083301376/1572590089412608/STEM/f2535dd6a96f4eefa23ca82ed5aa3234.png?resizew=96)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2cd048b76d8fa86a110f044e52ffc85.png)
![](https://img.xkw.com/dksih/QBM/2016/4/12/1572590083301376/1572590089412608/STEM/f2535dd6a96f4eefa23ca82ed5aa3234.png?resizew=96)
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3 . 已知向量
=(1,1,0),
=(﹣1,0,2)且k
+
与2
﹣
互相垂直,则k的值是
![](https://img.xkw.com/dksih/QBM/2016/3/28/1572560000770048/1572560006184960/STEM/2091ca1c9c604c2d902c75c82e4179c6.png)
![](https://img.xkw.com/dksih/QBM/2016/3/28/1572560000770048/1572560006184960/STEM/7820e57fb0414345ad7512debbe11f30.png)
![](https://img.xkw.com/dksih/QBM/2016/3/28/1572560000770048/1572560006184960/STEM/28db5c088b9b4c478b62fc31ce9d3b44.png)
![](https://img.xkw.com/dksih/QBM/2016/3/28/1572560000770048/1572560006184960/STEM/cc6ba9b8b37843649769aa4c65614d76.png)
![](https://img.xkw.com/dksih/QBM/2016/3/28/1572560000770048/1572560006184960/STEM/28db5c088b9b4c478b62fc31ce9d3b44.png)
![](https://img.xkw.com/dksih/QBM/2016/3/28/1572560000770048/1572560006184960/STEM/cc6ba9b8b37843649769aa4c65614d76.png)
A.1 | B.![]() | C.![]() | D.![]() |
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2016-12-04更新
|
209次组卷
|
4卷引用:2015-2016学年宁夏银川市育才中学高二上学期期末理科数学试卷
4 . 在Rt△ABC中,CA=CB=3,M,N是斜边AB上的两个动点,且
,则
的取值范围为
![](https://img.xkw.com/dksih/QBM/2016/1/25/1572464509894656/1572464515850240/STEM/a823399864b2418b98da3c4ba6703945.png)
![](https://img.xkw.com/dksih/QBM/2016/1/25/1572464509894656/1572464515850240/STEM/e98b1c4f8fb74872bdf2ec6e5a11718b.png)
A.[3,6] | B.[4,6] | C.![]() | D.[2,4] |
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5 . 已知平面向量
,
,
,则
的值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b0e734ccbdfc1ede8b76e1d7a23ab92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4a7bf3ee69a25c09f742fd16c12e50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/160e60fcfbde7109f96b7d2ac966ddf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5fffd330dd6b9241659d790bd2a7fb2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2016-12-03更新
|
333次组卷
|
4卷引用:2016届宁夏吴忠中学高三上第四次月考文科数学试卷
6 . 已知,
,
,且
与
垂直,则实数
的值为______ .
![](https://img.xkw.com/dksih/QBM/2016/1/5/1572416141746176/1572416147431424/STEM/876d113871754e7f96ac45a462681821.png?resizew=37)
![](https://img.xkw.com/dksih/QBM/2016/1/5/1572416141746176/1572416147431424/STEM/aae3208d43e346afa7a3ab6bbda8d3e4.png?resizew=37)
![](https://img.xkw.com/dksih/QBM/2016/1/5/1572416141746176/1572416147431424/STEM/86b954b7f6e64e9fa0d58626fbc5814a.png?resizew=40)
![](https://img.xkw.com/dksih/QBM/2016/1/5/1572416141746176/1572416147431424/STEM/4fc614a7a3dd4a6988de05083a681140.png?resizew=40)
![](https://img.xkw.com/dksih/QBM/2016/1/5/1572416141746176/1572416147431424/STEM/0b67fbc169af422795f5179461a7ac53.png?resizew=12)
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2016-12-03更新
|
370次组卷
|
2卷引用:2016届宁夏银川市二中高三上学期统练二理科数学试卷2
7 . 已知|
|=1,|
|=2,
与
的夹角为
,则
+
在
上的投影为
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572293880684544/1572293886140416/STEM/d04a6ec8d2c44b0c9711249a75ec9504.png)
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572293880684544/1572293886140416/STEM/677306c370074cd68f840d44a941aa48.png)
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572293880684544/1572293886140416/STEM/2d5173a27428432691f638ab5d8b1170.png)
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572293880684544/1572293886140416/STEM/677306c370074cd68f840d44a941aa48.png)
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572293880684544/1572293886140416/STEM/7582d75014d14d71b067b0ce16d67b52.png)
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572293880684544/1572293886140416/STEM/d04a6ec8d2c44b0c9711249a75ec9504.png)
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572293880684544/1572293886140416/STEM/f9d958d220f24613a48ac4567c0f53f2.png)
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572293880684544/1572293886140416/STEM/d04a6ec8d2c44b0c9711249a75ec9504.png)
A.1 | B.2 | C.![]() | D.![]() |
您最近一年使用:0次
8 . 设
与
是两个不共线向量,
=3
+2
,
=k
+
,
=3
-2k
,若A、B、D三点共线,则k的值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48bd8a052e56b53a66497b4b55a968a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc155e36276a2226c40a1f4ef7a0f41a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1fe2d802f2b37e7db198c5a3c1df9a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48bd8a052e56b53a66497b4b55a968a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc155e36276a2226c40a1f4ef7a0f41a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9b52345323a7eb6bf44e8447e10e9ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48bd8a052e56b53a66497b4b55a968a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc155e36276a2226c40a1f4ef7a0f41a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84a1a69d7460d12d4facd43e0d941190.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48bd8a052e56b53a66497b4b55a968a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc155e36276a2226c40a1f4ef7a0f41a.png)
A.-![]() | B.-![]() | C.-![]() | D.不存在 |
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10-11高二上·宁夏银川·期中
9 . 已知四边形ABCD的三个顶点A(0,2),B(-1,-2),C(3,1),且
,则D的坐标为
![](https://img.xkw.com/dksih/QBM/2015/4/7/1572063846932480/1572063851896832/STEM/44eb05fdab294c6ba5ea4d046ea36c3b.png)
A.(2,![]() | B.(2,-![]() | C.(3,2) | D.(1,3) |
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13-14高三·广东·阶段练习
名校
10 .
是△ABC所在平面内的一点,且满足
,则△ABC的形状一定是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7168b2701f7f984d09101c82774e11a.png)
A.正三角形 | B.直角三角形 |
C.等腰三角形 | D.斜三角形 |
您最近一年使用:0次
2016-12-03更新
|
1246次组卷
|
7卷引用:2015届宁夏银川一中高三上学期第二次月考试卷文科数学试卷
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