1 . 设
与
是相互垂直的两个向量,
,
且满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf0b40ab957abd03f1db03ddf71242fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/285a78e061d318c724971ce7def2d8dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af7e5e4ccbacc0ea7bca5768f6b250bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
A.![]() | B.4 |
C.2 | D.![]() |
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2019-11-29更新
|
501次组卷
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2卷引用:湖南省长沙市明德中学2019-2020学年高二上学期12月月考数学试卷
2 . 设
、
、
是任意的非零平面向量,且相互不平行,关于以下命题:①若
,则
;②
;③
不与
垂直;④若
,则
与
垂直.其中真命题的个数有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c308ea87b699ee1dcb879a568899de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f26e5e4f403677580c64da73caae506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efde213b99d2271cdde71de744879d47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb2573e682e7f1dfe161594793035f69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f9eb367907f6b91016ce8abce5d8f73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c308ea87b699ee1dcb879a568899de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/452ea5747aa9c4ecb8d9e21c3bda14b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
A.1个 | B.2个 | C.3个 | D.4个 |
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名校
3 . 已知抛物线
与直线
相交于A,B两点,O为坐标原点.
(1)求证:
;
(2)当
时,求
的弦长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d4872a20fc392c0e368aa3bfe3d8037.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46de5f5993e7dcd0e828081045e502af.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e69866076dcff686a05e9e91e61e68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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2019-11-21更新
|
547次组卷
|
3卷引用:宁夏回族自治区银川市兴庆区宁一中2019-2020学年高二上学期期中数学(文)试题
4 . 在
中,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1142176aeceb3e9327d15063ce3fa6de.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa8cee7d2463f6f7d352e8b65f47cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a69550d878381f6e8fb436e88638f070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1142176aeceb3e9327d15063ce3fa6de.png)
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2019-11-08更新
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148次组卷
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3卷引用:上海市金山中学2019-2020学年高二上学期9月月考数学试题
5 . 若
,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a8c397f920c1d8796b5f4d7a2618e58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86e7b81358e49ad82d5afb69025c1230.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67241f714566addd4cd5ee390e770cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
您最近一年使用:0次
名校
6 . 已知平面向量
,
,若
,
,
与
的夹角
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.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/da032e305b3ad38754e2d52b8ca086bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/082c6926889f84f438ea35f70bf05f02.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/734a6a1d319648bb969845a9159cdba7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d611a54a2e231189448c4fad437ae9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
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7 . 已知
,
,其中
分别为
轴正方向单位向量
(1)若
,求
与
的夹角
(2)若
,求实数
的值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e57f9aad8cc7790710c7b2a0e1cd80fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acf44eb42ba432467866599b2517d7fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/204caf31d3dd1702c5a6eaa1a6405b61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2e647c14561826ba9e396acc5a3792c.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e0eb433065c91c26548e916ba31a36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2019-12-07更新
|
161次组卷
|
4卷引用:上海市宝山区宝山中学2017-2018学年高二上学期期末数学试题
上海市宝山区宝山中学2017-2018学年高二上学期期末数学试题上海市浦东新区2016-2017学年高二上学期期中数学试题上海市新场中学2020-2021学年高二上学期第一次月考数学试题(已下线)第8章 平面向量【过关测试】-2020-2021学年新教材高一数学下册单元复习一遍过(沪教版2020必修第二册)
名校
8 . 设单位向量
和
既不平行也不垂直,对非零向量
,
,有结论:① 若
,则
;② 若
,则
;关于以上两个结论,正确的判断是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8315ec34019d719771152be2252106e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf39ca3294f5520518dd4f1c0609876.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1c27ab2d64ac08db23dfb4283c7d7e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aeddc62007e6ec581e6cb87925e876d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eea876996fab48cf16290c1c66a5563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a683d9cd5f84e07bc351819d9dd96df4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da3ff6f17be99ec311610efa08ba002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb58883caf5c8ca1e94389839d294b6.png)
A.①成立,②成立 | B.①不成立,②不成立 |
C.①成立,②不成立 | D.①不成立,②成立 |
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2019-12-07更新
|
411次组卷
|
4卷引用:2016年上海市普通高中学业水平考试数学试题
9 . 已知向量
与
的夹角为
,且
,
.
(1)计算:
;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231b861d6d1f1d0b9f52b041cb40eb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf0b40ab957abd03f1db03ddf71242fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/459b84065e210c3ba8181a0c23255b79.png)
(1)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b4442b5d27518f76cb9b487650035c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d9c5e5972ea47681866dc17b1c101be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2019-12-06更新
|
426次组卷
|
2卷引用:上海市杨思中学2018-2019学年高二上学期期中数学试题
名校
10 . 已知向量
,
.
(1若
,求实数
的值:
(2)若
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96b0459ded105c937056507489f2524b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ffcc21ffa986fd2a5d15134490bd32a.png)
(1若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/076d60dd9a9db2d741198de68333aed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91a673a996afba7bc8f184f13e908e9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2020-03-04更新
|
183次组卷
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4卷引用:江苏省南京师范大学附属中学2016-2017学年高一寒假复习卷数学试题