1 . 已知四点A(-3,1),B(-1,-2),C(2,0),D(
)
(1)求证:
;
(2)
,求实数m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4a40b2cc217b6bdadb5e03037a5c51e.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f292d11d9f5fc1a5e04118fb7de8a881.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7dee8948e9ecf898ebbeab9193de889.png)
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2017-10-18更新
|
633次组卷
|
3卷引用:福建省福州市2015-2016学年高一下学期期末质量检测数学试题
2 . 已知
为原点,
、
、
为平面内的三点.求证:
(1)若
、
、
三点共线,则存在实数
、
,且
,使得
;
(2)若存在实数
、
,且
,使得
,则
、
、
三点共线.
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
(1)若
![](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/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3999cdc37dd36b630ccfd72bd36e9f96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc0faa9202451fe5a08989ba3637ac16.png)
(2)若存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3999cdc37dd36b630ccfd72bd36e9f96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc0faa9202451fe5a08989ba3637ac16.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)
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3 . 已知点
,向量
(Ⅰ)若点
在第二象限,求实数
的取值范围
(Ⅱ)若
,判断四边形
的形状,并加以证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3aedb0b8ce3795205139452f20efa09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49df0464fb63c768400537b7be9d6691.png)
(Ⅰ)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500d68f2678989a5ce7431cfd51b019d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de6c989fd224866658230526892e2bcb.png)
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13-14高一下·湖南长沙·期中
名校
4 . 在平面直角坐标系中,
为坐标原点,
三点满足
.
(1)求证:
三点共线;
(2)求
的值;
(3)已知
,
的最小值为
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f81983d4745fe5bb69c1da13e36dd92.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebf5bfb21cecf0851e5e78e0d036d32d.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50fa39ecb42f9ebef0503cb8d330c6d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59ae1d3222e2c82e0cfc79938ed1e21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e8b4bbd2f9912adfc9864c0e1e76a9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2017-06-23更新
|
987次组卷
|
4卷引用:2013-2014学年湖南省浏阳一中高一下学期期中考试数学试卷
(已下线)2013-2014学年湖南省浏阳一中高一下学期期中考试数学试卷(已下线)2013-2014学年湖南省浏阳一中高一下学期期中数学试卷江苏省苏州市2016-2017学年高一下学期期末备考试题分类汇编:平面向量中的最值问题探究数学试题辽宁省朝阳市建平县实验中学2020-2021学年高一下学期期末数学试题
名校
5 . 设向量
的夹角为
且
如果![](https://staticzujuan.xkw.com/quesimg/Upload/formula/311b2cfca599bd42d92380e24c5b0e41.png)
(1)证明:
三点共线.
(2)试确定实数
的值,使
的取值满足向量
与向量
垂直.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1238a7a8ce9db1a47ae0ac80d5ed70cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9bf2423499d45354dbc8377f1f04e16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbeda011b023f86d0cdb0cb8873c5580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/311b2cfca599bd42d92380e24c5b0e41.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a65183d238c9bc2be73770717d890683.png)
(2)试确定实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4740f5cb397b07da27fe5cc91ec6b6a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b0f2ea9d9ee7dcbfef19f8106b1934d.png)
您最近一年使用:0次
2017-05-03更新
|
732次组卷
|
6卷引用:山东省淄博市实验中学、高青一中2016-2017学年高一下学第一次模块考试(期中)数学试题
解题方法
6 . 设
,向量
,
,
,
.
(1)若
,求α;
(2)若
,求
的值;
(3)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c645c6f3f65969c3b93f5d6023669952.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e705609358b31101cb6548e7effce65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65b1dfbe10cffea8d7eed2a306a1159a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13d39a75ded1625c2e12d2f671eb8982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c86229d59d2b1cbf741fd05339cf53c8.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12976a4d92584494d1c2c714684d45b1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fe24b37cb83ec19030408cb38f59b99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25479a15fab65f88a0a66931b3d5c2e.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9907af5a98bb91e794239f34f3435e42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06af3a99324b971adcc115410e6ca905.png)
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7 . 在平面直角坐标系中,O为坐标原点,A,B,C三点满足
,
(1)求证:A,B,C三点共线;
(2)求
的值;
(3)已知
,
的最小值为
,求实数m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6983b8b908199ce3ba3e06bd4d8e6c39.png)
(1)求证:A,B,C三点共线;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f7041b30b359d37acdf37e3cefe9e63.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f7bb1af044c5e4eba8846e956def7e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9374472f5b975fbcfd0eed8c0007ae7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e8b4bbd2f9912adfc9864c0e1e76a9d.png)
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10-11高一下·陕西·期末
名校
8 . (Ⅰ)如图1,
是平面内的三个点,且
与
不重合,
是平面内任意一点,若点
在直线
上,试证明:存在实数
,使得:
.
(Ⅱ)如图2,设
为
的重心,
过
点且与
、
(或其延长线)分别交于
点,若
,
,试探究:
的值是否为定值,若为定值,求出这个定值;若不是定值,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3933f3a781f660f17868e8a3ab46d2f7.png)
(Ⅱ)如图2,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eb26800893b48ba93adb08bb27b0828.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c5eeae67a55af37ed525cf99e645a58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27e62ba44cbfec6823ebc1f0c7457fb.png)
![](https://img.xkw.com/dksih/QBM/2011/9/9/1570307447824384/1570307453329408/STEM/eac863d4311e4938aca3248dd8bfe3a0.png?resizew=358)
您最近一年使用:0次
2016-12-01更新
|
1268次组卷
|
7卷引用:2010-2011学年陕西省师大附中高一下学期期末考试数学试卷
(已下线)2010-2011学年陕西省师大附中高一下学期期末考试数学试卷(已下线)2011-2012学年浙江省宁波四校高一下学期期中数学试卷沪教版(2020) 必修第二册 同步跟踪练习 第8章 平面向量 单元测试卷沪教版(2020) 必修第二册 同步跟踪练习 第8章 测试卷贵州省黔西南州金成实验学校2021-2022学年高一下学期4月质量监测数学试题江苏省连云港市东海高级中学2022-2023学年高一下学期学期第一次月考数学试卷(已下线)专题13 平面向量(练习)-2
2014高三·全国·专题练习
解题方法
9 . 已知点
是
的重心,M是
边的中点.
(1)求
+
+
;
(2)若
过
的重心G,且
,
,
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b83beedb3438153e6f728545fe3e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bf1ea09767968c5aa42908fd2c869a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79bf5928ac2dbab1c6463915d50268b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0cc4537af4f7313461335a93b8ac5fa.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b83beedb3438153e6f728545fe3e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14390e9b6b44472bdc7a131133ab39b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cd14dfc0024459f9d8e594c95c5106.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffc83b8da957d44914586bc8de343b35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba92d0f37859b5c9a8b5ce6a2391661d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3288630168d66493e57dd88c96c36d93.png)
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