在复平面内,点
对应的复数分别为
.
(1)求向量
及
的坐标;
(2)若以
为邻边作平行四边形
,求点
对应的复数
及
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a45dbad10d44b5e7f523f9f6f314bac.png)
(1)求向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1fe2d802f2b37e7db198c5a3c1df9a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b680f91c4a693cc9ab2c23f2e9114ce.png)
(2)若以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/520f8abda6a85e7ef6f281fc2df853fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b29a77cfdb8d2a0b684389921e1496c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
21-22高一下·北京·阶段练习 查看更多[6]
北京市第二中学2021-2022学年高一6月阶段落实测试数学试题(已下线)第05练 复数-2022年【暑假分层作业】高一数学(苏教版2019必修第二册)福建省漳平第二中学2022-2023学年高一下学期第一次月考数学试题福建省福州日升中学2022-2023学年高一下学期期中考试数学试题(已下线)第七章:复数 章末检测试卷-【题型分类归纳】2022-2023学年高一数学同步讲与练(人教A版2019必修第二册)(已下线)7.1.2?复数的几何意义——课后作业(巩固版)
更新时间:2022-06-13 08:47:49
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解答题-问答题
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解题方法
【推荐1】已知
,
,
,
.求:
(1)
;
(2)
;
(3)与
同方向的单位向量
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eff2b66f2fd178d97544a7c657d67c92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/753a20548d11c870df4e8af80e14d2c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bdbfbb76eec32bc4043294f084ce817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e9aaed4b0c23fcb1e08bf3b4916206.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560ee2894ba8c5cee6633430cc8b3b41.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89b1556bb6b2284919fab2b00dccecba.png)
(3)与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560ee2894ba8c5cee6633430cc8b3b41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc9638527d61ddbd2b69518e62010ffd.png)
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【推荐2】在平面直角坐标系中
,
,设点
,
是线段AB的n等分点,其中
,
.
时,使用
,
表示
,
;
(2)当
时,求
的值;
(3)当
时,求
(
,
,i,
)的最小值.
![](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/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d12508f3062ac9fbeb727ab4ac831b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4613271f782a90ab580131d09d03d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f605ec0729ce6d72237ad662a06862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc9656d8286c4d6fa309d6ae347c89e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96cb7ee166966ed0b1605c263e433cf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcc77d6da6e8f3ad5c239e7cc6c9930c.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6ea0392d4bd0374c8a2b12a355e4655.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17691e34828db203ede1ffc24af4b24a.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe08722cf9300fe188dbbb71989c06c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5503a0d6627fd86aace4915d205ba4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9612cb52aacd0b66fc1ba1297267c9c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fffa76fee075ec824d689b610c11bf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b643548ba75f6577d6cc30c23efcf7b1.png)
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【推荐3】设平面三点
.
(1)试求向量
的模;
(2)试求向量
与
夹角的余弦值;
(3)试求与
垂直的单位向量的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8594ce09b5700e6ef37b2197a56005f.png)
(1)试求向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bad0fd7cda9507b3b48aa3ec3e5be2f3.png)
(2)试求向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9795e7f5cb9b366776c41d8f3f43942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be64d59ac6538a0f4d79fb825e082081.png)
(3)试求与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d792a2aa25763e14cc2863be3887000.png)
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解题方法
【推荐1】在复平面上,正方形
的
、
、
、
按逆时针方向排列.
,
对应的复数分别为
与
.
(1)求
、
分别对应的复数
与
;
(2)设
与
对应的复数分别为
与
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/47b59029f5b652f9d525495f1a4be081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c663a1529dcc03f744196d586c20a69.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97726ebf4799be3d87cee90de9bfbcd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c2ca00cedf2a449f6b928c38874093a.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be64d59ac6538a0f4d79fb825e082081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f90e16e18b1e88ebb1ab811d06be76.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/7a8ca7cb46181d1e00c8ff65f6fa8e75.png)
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【推荐2】已知关于
的实系数一元二次方程
.
(1)若方程的一个根在复平面上对应点为
,求
的值;
(2)是否存在实数
,使得方程的两个根在复平面上对应的向量的夹角为
?若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5d44d4f2348cf8a206c550f7a8681a1.png)
(1)若方程的一个根在复平面上对应点为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c47acdaa7db189fa7b579edbadaf115d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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【推荐1】已知i是虚数单位,O为坐标原点,向量
对应的复数为
,将向量
向上平移3个单位长度,再向左平移2个单位长度,将得到的向量记为
,分别写出:
(1)向量
对应的复数;
(2)点
对应的复数;
(3)向量
对应的复数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/911c0a2ab5e2e85f1ad267f41cb96b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/014d0e3964e22a3bf1b34b3d77d877ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/911c0a2ab5e2e85f1ad267f41cb96b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d7ed2e1b486ff132a75699c3127928.png)
(1)向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d7ed2e1b486ff132a75699c3127928.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12fe32dfbd66709875c5b9f79c9496da.png)
(3)向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e13b853bb0397963c9f607c2762430e4.png)
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【推荐2】设
对应的向量为
,将
绕点O按逆时针方向和顺时针方向分别旋转45°和60°,求所得向量对应的复数(用代数形式表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08e4765f0c69840df5374e6921810c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9d00a5d8c399448752f3da2443d6bfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9d00a5d8c399448752f3da2443d6bfc.png)
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【推荐1】已知
的顶点坐标依次为
,
,
,在边AB上有一点P,其横坐标为4,在边AC上求一点Q,使线段PQ将
分成面积相等的两部分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8748dc55e2f45bc37fc4d84d7310f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e256c6b4d4058c96ce020ab69026cf78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be296810bd9673cf8602cd91307f18c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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【推荐2】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)
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