20-21高一·全国·课后作业
解题方法
1 . 已知向量
,
.求证:
与
是共线向量.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bafaf9eb34357068e52faba3e647fad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/760b2961e948450b059f75673621c8d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee437e6ff470c2f67b8429f57b90ae37.png)
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2 . 如图,点P,Q三等分线段AB时,有
.如果点
,
,…,
是AB的
等分点,你能得到什么结论?请证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f54e46572a1b07ac3332f9a6f28914bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94ea50db79b18d8700cfa2559ff5e2d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8715a3f984d2627afd7c40c61347b7cb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/1769bd92-31d0-4066-b5c8-27631c5962c1.png?resizew=214)
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解题方法
3 . 设
为
的重心,
为
的重心,过
作直线
分别交线段
,
(不与端点重合)于
,
.若
,
.
(1)求证
为定值;
(2)求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81722445de00f3cfcc3cb97e45b0d8dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc1b68f13fed987f5209197de7bc8b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81722445de00f3cfcc3cb97e45b0d8dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59e132194c1ff4c62aadf52561be1c89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28c4eaa1e5dd08305162415799a063d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e17e3fee22f1387717efa36456a196.png)
(1)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f0b84ee4ed90face0993d4f4dda379.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
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4 . 求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e67754083c82dd7a19f2ca3a5a544bff.png)
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2020-02-02更新
|
664次组卷
|
3卷引用:6.2 平面向量的运算习题
13-14高一下·湖南长沙·期中
名校
5 . 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)
您最近一年使用:0次
2017-06-23更新
|
987次组卷
|
4卷引用: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
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(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