1 . 已知平面直角坐标系
中有三点
、
、
,其中
为坐标原点.
(1)求与
同向的单位向量
的坐标;
(2)若点
是线段
(包括端点)上的动点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf5a6145990adf5574f0e0f2fc828ea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d8638349bba38af6d6d53a55634626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f2b2e17012dad782bd12795cd27488.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)求与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe35c91649a5bea2518387a2b36e0c0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358d896d9eab84c6695ddc25196e6857.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/844ceb96b1409ce193cdf145a4fcddca.png)
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2020-01-09更新
|
583次组卷
|
2卷引用:上海市华东师大一附中2017-2018学年高二上学期期末数学试题
2 . 若
、
、
且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab47bf43b2c5d6395129b80ddfbb1b24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e9a62ad651d31cd5e7fec2c9d42b282.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4b6da6b333df030751e43e89d042e6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0587e6e9a64b99bc4bdfad5f52c7fce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
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3 . 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
4 . 已知
的外接圆的圆心为
,半径为2,若
,且
,则向量
在向量
上的投影为_____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23c4c13af129ba5dd12d35b431836a9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6100f629d6d9660225199c13d4810e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12e5b64c049e2c6aa50e3008f3e2fdeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2196a273b5193b5cd4c072331a155b63.png)
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5 . 已知
,且
与
的夹角为
(1)求
;
(2)若
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2436ceefe6943b41626fa5ac12aac45.png)
![](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/2d88591679796c52024d11c4de641bdb.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94bee542fe9c94b1d556adbe37909eb6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc88b1c6211e429949e819fae527973f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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6 . 已知O为坐标原点,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c2b0f51c8029ee90245937a8a96989.png)
(1)若
为锐角,求实数
的取值范围;
(2)若
是以
为直角的直角三角形,求实数
的值并求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c2b0f51c8029ee90245937a8a96989.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
您最近一年使用:0次
7 . 向量
,若
,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c441ed9a9b66ca7845a82cef552abbf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb58883caf5c8ca1e94389839d294b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
您最近一年使用:0次
2019-12-04更新
|
259次组卷
|
3卷引用:上海市浦东实验2018-2019学年高二上学期期中数学试题
名校
8 . 在
中,
是
中点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/465f4f749b575f199874f011ada4274f.png)
______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e956ea72fe1fe43f6a76f94a41ff09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/465f4f749b575f199874f011ada4274f.png)
您最近一年使用:0次
2019-08-02更新
|
584次组卷
|
2卷引用:上海市松江区松江二中2017-2018学年高二上学期第一次月考数学试题
9 .
、
、
是平面上不共线的三点,向量
,
,设
为线段
垂直平分线上任意一点,向量
,若
,
,则
的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/6942bd9fc5d090de0cfad7022aa32f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84cc63e33fe47da2704cff57d148dde0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1422cbcdbd42cf63e73f32f9cedc1e26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22bb659c745297ad46a35afd65e5a8d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2732049cec3ec12b1cbaed818b22e7d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22cd5693b7f123993cc4879befc845ea.png)
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解题方法
10 . 有下面四个关系式:①
;②
;③
;④
,其中正确的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/458ba97de8e30180950b26624666ac3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/993061a865fa5d3f706fb2bef0d684a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2141a819986c20a7d7414914dec686e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e07b674cd5f21473fd920ad43ccced0e.png)
A.1 | B.2 | C.3 | D.4 |
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