2021高二·江苏·专题练习
解题方法
1 . 已知平面直角坐标系中有两定点
,
,平面中有一动点M,该点使得
满足条件
,则
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f7a7cf83fb9706134edb619d8aa90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6cc3f576dcf32e3ec2de59ea8059a4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b42fc33bcfc63ec2f4940ccd3f862400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd4a70ff777ba348ead2984d24bd362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12f4dae5397232f44d0051fae1b0bd39.png)
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2 . 已知
,
是平面内两个夹角为120°的单位向量,点C在以O为圆心的
上运动,若
=x
+y
(x,y∈R).下列说法正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60dcb171bb7fd972aab8294d63acdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68628a408537b1cf3bf1ca2a69731b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20ec3efaa6b6ff5769e8999df5714a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60dcb171bb7fd972aab8294d63acdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68628a408537b1cf3bf1ca2a69731b6.png)
A.当C位于![]() |
B.当C位于![]() |
C.![]() ![]() ![]() |
D.![]() ![]() |
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2021-08-26更新
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7卷引用:江苏省无锡市宜兴市2020-2021学年高一下学期期中数学试题
江苏省无锡市宜兴市2020-2021学年高一下学期期中数学试题江苏省无锡市第一中学2021-2022学年高三上学期11月月考数学试题广东省佛山市南海区第一中学2020-2021学年高一下学期段考数学试题(已下线)专题03 平面向量(突破训练)-备战2022年高考数学二轮复习重难考点专项突破训练(全国通用)湖南师范大学附属中学2022-2023学年高三上学期月考(四)数学试题湖南省邵阳市邵东市第四中学2022-2023学年高一下学期期中数学试题江西省九江市第七中学2024届高三上学期12月学情诊断数学试题
3 . 已知复平面内点
,
,
分别对应复数
,
,
,其中
,
,
,
,
是原点.
(1)求证:
;
(2)求四边形
面积的最大值.
![](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/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa224ed9be8766a4d0b5138bd57de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a67a742d2a43e907fb1c3a1bdf1d6a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24609b96de8c796244b484dba91aa5a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/967e14297b99b9eb04f03c9f71707dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9e47bc0b93e3a6312626e5e5b0d2589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/093a8b8ae821672881302438e8e71f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
(2)求四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ea16ceca816f7d3d50650af141baf42.png)
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4 . 已知半圆圆心为O,直径AB=4,C为半圆弧上靠近点A的三等分点,若P为半径OC上的动点,以O点为坐标原点建立如图所示的平面直角坐标系.
![](https://img.xkw.com/dksih/QBM/2021/4/30/2710766181031936/2771971165282304/STEM/ba0dc6ac296d45149b9ce4b057be7887.png?resizew=272)
(1)若
,求
与
夹角的大小;
(2)试确定点P的位置,使
取得最小值,并求此最小值.
![](https://img.xkw.com/dksih/QBM/2021/4/30/2710766181031936/2771971165282304/STEM/ba0dc6ac296d45149b9ce4b057be7887.png?resizew=272)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/876abd1dec09580c08d8f7e1c85dffcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d956b09c004ddf8bdf6669a8182e80ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99a1b3d5f4068fbcba6e4b47971d51a8.png)
(2)试确定点P的位置,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f125783c4f9d422f8ac6caebac164f6a.png)
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解题方法
5 . 在复平面内,已知复数
、
(其中
)对应的向量分别
、
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2c916fd7ddb4e800d98b15ce54c4d66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/300aea74a6b87e1b03395dcd899ea726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a72ff93c6b79f395aabb9f25e45203d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95985232e68bbf4e37f147d89efbfed6.png)
A.![]() | B.![]() |
C.![]() | D.![]() ![]() |
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解题方法
6 . 已知,
为坐标原点,
,
,
为
的中点
(1)若
是线段
上任意一点,求
的最小值:
(2)若点
是
内一点,且
,
分别为
轴正半轴,
轴正半轴两点,且有
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a98eaaab44a91d0bad21dbd260be770.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cfba05dbe7c648be80649633f07b817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59681cde5678bc4a7a5615ba7db36e03.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07445aa3909818a3ef93bb01182f545f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2e1b8d2be04779fa5c6ad22f650a21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83b7afb42cabffdcc75ae8a5976d1d49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ffab5b27f151c937cdd97cc97000584.png)
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2021-07-10更新
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2卷引用:江苏省镇江市第一中学2020-2021学年高一下学期6月月考数学试题
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解题方法
7 . 已知
中,
在
轴上,点
是
边上一动点,点
关于
的对称点为
.
(1)求
边所在直线的方程;
(2)当
与
不重合时,求四边形
的面积;
(3)直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f30c61a02b40511af1b459f31986d56a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab609a6574633ebabcff3e73fa862081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/520f8abda6a85e7ef6f281fc2df853fa.png)
(3)直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf93c36691a6faab3e6fd40057e87a1.png)
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5卷引用:专题1.3 直线与方程 章末检测3(难)-【满分计划】2021-2022学年高二数学阶段性复习测试卷(苏教版2019选择性必修第一册)
(已下线)专题1.3 直线与方程 章末检测3(难)-【满分计划】2021-2022学年高二数学阶段性复习测试卷(苏教版2019选择性必修第一册)北京市第八中学2020-2021学年高二下学期期末数学试题(已下线)第12讲 点到直线的距离公式-【帮课堂】(已下线)2.3直线的交点坐标与距离公式(专题强化卷)-2021-2022学年高二数学课堂精选(人教A版2019选择性必修第一册)(已下线)第07讲 直线的交点坐标与距离公式(6大考点12种解题方法)-2022-2023学年高二数学考试满分全攻略(人教A版2019选择性必修第一册)
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解题方法
8 . 我国汉代数学家赵爽为了证明勾股定理,创制了一幅“弦图”,它由四个全等的直角三角形和一个正方形所构成(如图),后人称其为“赵爽弦图”.在直角三角形
中,已知
,
,在线段
上任取一点
,线段
上任取一点
,则
的最大值为( )
![](https://img.xkw.com/dksih/QBM/2021/5/4/2713965624532992/2716106368851968/STEM/edc3fa89-0655-4d53-840c-bbd5447ae4c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8f149f673cbe25b705cd476e24f8b65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f92d396da3c16a2ff791d29151ba0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af6498039e9b4a494c860e9b7a4e36dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91569032c41d0e2c0de44ba9e72e21e4.png)
![](https://img.xkw.com/dksih/QBM/2021/5/4/2713965624532992/2716106368851968/STEM/edc3fa89-0655-4d53-840c-bbd5447ae4c1.png)
A.25 | B.27 | C.29 | D.31 |
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2021-05-07更新
|
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2卷引用:江苏省苏锡常镇四市2021届高三下学期5月教学情况调研(二)数学试题
9 . (1)对于平面向量
,
,求证:
,并说明等号成立的条件;
(2)我们知道求
的最大值可化为求
的最大值,也可以利用向量的知识,将
构造为两个向量的数量积形式,即:令
,
,则转化为
,求出最大值.利用以上向量的知识,完成下列问题:
①对于任意的
,求证:
;
②求
的最值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff409cd3886c767afb13c9a869c5f23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6570cd7c2f81c9fcffd2c64664f1564.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b1d21f757e06a46d40f9b8c4f525aa.png)
(2)我们知道求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/144e44ad8402f5ee368f64a87ab8c4e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9e0b006e08261158ac9b1cd631da051.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd288d4152caf5fc8187a1a901c8949f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070a34585f3a61222c25cebdd532184f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d68ce4ff798e7cdcc8f4256c2fd6570.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bb9fa34fafe6cd3a7db5c79cda3e0c3.png)
①对于任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32ac12138178cb539a9e1c8f77587038.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/920a38dd1573498365963519c3bd2daa.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61c5e59b2552eb5f033aea9e034e87ba.png)
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