1 . 设平面内三点
,
,
.
(1)求
;
(2)设向量
与
的夹角为
,求
;
(3)求向量
在
上的投影向量.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8748dc55e2f45bc37fc4d84d7310f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49cba284d675a3028d7a8d54f1f8ae70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9988951f970f0195a18cccc981e0d6fa.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c113645e6e4f7a569718c7882413ea25.png)
(2)设向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9795e7f5cb9b366776c41d8f3f43942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be64d59ac6538a0f4d79fb825e082081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aefd06c239145a2b6ae87a955aa51414.png)
(3)求向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be64d59ac6538a0f4d79fb825e082081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9795e7f5cb9b366776c41d8f3f43942.png)
您最近一年使用:0次
解题方法
2 . 平面向量
与
的夹角为
,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee437e6ff470c2f67b8429f57b90ae37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2e158a53b1b67708aea049a3acde3d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed13f678d9d69e61ec74d8dcedce3764.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4247a5aa34b3e197b79719e8606b02f6.png)
A.![]() | B.![]() | C.4 | D.1 |
您最近一年使用:0次
3 . 已知A(-2,1),B(2,4)则
=___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/898c460cc634085ee22811eeab447fb2.png)
您最近一年使用:0次
4 . 已知向量
,
,则正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ced2d0a47bde59255f1adfe9a7252bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/165f910a08822b71a4c73e8f4a159e3f.png)
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() ![]() | D.若向量是![]() ![]() ![]() |
您最近一年使用:0次
名校
5 . 已知向量
的夹角为
,且
,则
在
方向上的投影为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d194ecefc9101001d88d3cc0bc9d6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f785147690f83dcee0a0bc6c327e75a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d6ca14a00240423c286ccee47696fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/427fa45527d0ce469bfd060bf6f991f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a92e6eba8dab638fd66831cd3a0b6d7.png)
您最近一年使用:0次
2021-09-08更新
|
898次组卷
|
5卷引用:安徽省十校联盟2021-2022学年高三上学期开学摸底考试文科数学试题
名校
6 . 已知
,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d43447a6eb9547ba5435e5d31bebf781.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1052ff143b54c7a2be1477c5b06fd0b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4747c9d80ccfa1a07338d9e3626ae87e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15ac384dd059e9d0c5a29f3b26d2ae29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d43447a6eb9547ba5435e5d31bebf781.png)
您最近一年使用:0次
2021-09-04更新
|
174次组卷
|
3卷引用:湖南省常德市2020-2021学年高一下学期排位检测数学试题
名校
解题方法
7 . 若
为坐标原点,
,
,
,
,
,则
的取值可能是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e9ba9037f88c7b83c63da549126dd1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac3bcab5a878b70d66c75dfc98ae6579.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14436636ec6a7aec09cb63cecf6e970d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a997de0ae248909647784ea048d32e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65d8df7fa19c1dc6f6f6544e147de0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b92d99b2b0f751d992fe588567864f54.png)
A.1 | B.2 | C.3 | D.6 |
您最近一年使用:0次
2021-09-02更新
|
274次组卷
|
5卷引用:河北省邯郸市大名一中、磁县一中,邯山区一中,永年一中等六校2020-2021学年高一下学期期中联考数学试题
河北省邯郸市大名一中、磁县一中,邯山区一中,永年一中等六校2020-2021学年高一下学期期中联考数学试题(已下线)6.3 平面向量基本定理及坐标表示-2021-2022学年高一数学10分钟课前预习练(人教A版2019必修第二册)山东省菏泽市郓城县第一中学2021-2022学年高一3月阶段性检测数学试题贵州省黔西南布依族苗族自治州兴义市顶效开发区顶兴学校2022-2023学年高一下学期第一次月考数学试题黑龙江省绥化市绥棱县第一中学2022-2023学年高一下学期6月月考数学试题
名校
解题方法
8 . 在等腰梯形
中,已知
,
,
,
,动点
,
分别在线段
和
上,线段
和
相交于点
,且
,
.
![](https://img.xkw.com/dksih/QBM/2021/5/12/2719660078292992/2794703230705664/STEM/d768bd4b-3d05-4bd5-a9ff-a2237daa6214.png?resizew=257)
(1)当
时,求
的值.
(2)记
,试求函数
的解析式及其最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd8e727e4efc22b49649f71ae9c9d84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94e0aec1f2c457fb25e263274efbd6f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/203d221ac5daf6139edfeba77557ee38.png)
![](https://img.xkw.com/dksih/QBM/2021/5/12/2719660078292992/2794703230705664/STEM/d768bd4b-3d05-4bd5-a9ff-a2237daa6214.png?resizew=257)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3cf0f585938ede9eca890a6eb326d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f4de28076d6973795ac348b14790382.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92a5216d03ad0fb70b6d99a1dc681fbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/419cc846921b034a219e175af2085669.png)
您最近一年使用:0次
解题方法
9 . 已知向量
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46b47b2797dd757bcf163f5a84cb81ef.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f7c0ac4a534ebba243b8a60eb4dea81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95fd21f36a44024fc056a7a9c6c8c870.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb7e15ea8375995ca729cc235b0c98f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46b47b2797dd757bcf163f5a84cb81ef.png)
您最近一年使用:0次
名校
解题方法
10 . 已知平面向量
,
,
,且
,
.
(1)求向量
和向量
;
(2)求
和
夹角和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee43b6d802195783ff92c612e782a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c94a582e8423ec830a9daddada2909f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/237711e2743d70304f966090d2bc091c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70facc9bc02af0867d248407bd317c05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7557713682c09ec526718378189f9f7e.png)
(1)求向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb573cc0f30d5c32cdad1510793f0e7b.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb573cc0f30d5c32cdad1510793f0e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27c250094127e2b3c878d68213b60407.png)
您最近一年使用:0次
2021-08-23更新
|
252次组卷
|
2卷引用:湖南省长沙卓华高级中学2020-2021学年高一下学期第三次月考数学试题