名校
1 . 任意一个复数z的代数形式都可写成复数三角形式,即
,其中i为虚数单位,
,
.棣莫弗定理由法国数学家棣莫弗(1667~1754)创立.设两个复数用三角函数形式表示为:
,
,则:
.如果令
,则能导出复数乘方公式:
.请用以上知识解决以下问题.
(1)试将
写成三角形式;
(2)试应用复数乘方公式推导三倍角公式:
;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1266e4d6e189cbd788785b44eb4491d6.png)
(3)记
,由棣莫弗定理得
,从而得
,复数
,我们称其为1在复数域内的三次方根. 若
为64在复数域内的6次方根.求
取值构成的集合,其中
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1810abd6348f8d3863be355fdce70c78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fea9021362c5e232929a37a05225cf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f687593cb4ecef31667bf2320fdfe000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45eef4221f949bbea8498b39ac1c136a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c825b7acba8f9997d38806be7b3b87eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5137aa9fb53b43fd558b2f1c26b0951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed43030ca376eb5e3331d75f103fc762.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1c6bdabdb3bfa767e0cb2f73eec6270.png)
(1)试将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb232df15bbcb2addccf8d5e7adc4d1f.png)
(2)试应用复数乘方公式推导三倍角公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a47bdf9c678020d1d50082f7bb208557.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1266e4d6e189cbd788785b44eb4491d6.png)
(3)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd0c30155ec5bc576f72e97afc42abaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2443c796f97e4b9b209a207abb3bf1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3eabab9c270c5390e9930a1376e6906.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c88c2ca3f32231770665622da3ba4be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930009e5e260660214817c4eaae0c712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75cd58d17916b906defc4d6817514272.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b71af6590f0f369c164a054a8b63bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11b70cd6a9f071d3a89f3c1c65b609b2.png)
您最近一年使用:0次
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2 . 已知
为虚数单位,复数
满足
.
(1)若
,求复数
的辐角主值;
(2)若
,复数
满足
为实数.则复数
在复平面上所对应的点的集合是什么图形?说明理由.
(3)已知复平面上点
对应的复数分别为
.记复数
的辐角主值为
.求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a491320664d2f5bab356117541b83347.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1089162a06a53efac3a30f60f4e3b76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cad1818490526d558c914a1938becc1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619adeb9313fcd751282961292d59854.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7408c9a6328cc085608bbcfd9cce4e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
(3)已知复平面上点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c851465a30dd28567031e4773cd5deb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f638c4517048807bfbc3d82044b370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
您最近一年使用:0次
名校
解题方法
3 . 任意一个复数z的代数形式都可写成复数三角形式,即
,其中i为虚数单位,
,
.棣莫弗定理由法国数学家棣莫弗(1667~1754)创立.设两个复数用三角函数形式表示为:
,
,则:
.如果令
,则能导出复数乘方公式:
.请用以上知识解决以下问题.
(1)试将
写成三角形式;
(2)试应用复数乘方公式推导三倍角公式:
;
;
(3)计算:
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09a0f4e84ca890b19f1a2d39b9c4d6f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826ff108f47b7dc4dd2e63e14c204a0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a34f45fe480fe6100c86a13db7ac652f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93d74cc1db74efb3bf74930e0ca3621a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b20d6f11c0a25c45c86eced22ec6405.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1681d16c04032fcc92d7931524106b05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed43030ca376eb5e3331d75f103fc762.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/785e47874ebcab903e4ac95fbd8f30aa.png)
(1)试将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb232df15bbcb2addccf8d5e7adc4d1f.png)
(2)试应用复数乘方公式推导三倍角公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a47bdf9c678020d1d50082f7bb208557.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1266e4d6e189cbd788785b44eb4491d6.png)
(3)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5b5976d1eab3219c6be0f3e85b4f406.png)
您最近一年使用:0次
2024-06-07更新
|
696次组卷
|
4卷引用:重庆市育才中学校2023-2024学年高一下学期阶段测试数学试题
重庆市育才中学校2023-2024学年高一下学期阶段测试数学试题江西省南昌市江西科技师范大学附属中学2023-2024学年高一下学期第二次月考数学试卷江西省南昌市江西科技学院附中2023-2024学年高一下学期5月份月考数学试卷(已下线)10.3 复数的三角形式及其运算-【帮课堂】(人教B版2019必修第四册)
名校
解题方法
4 . 在复数域中,对于正整数
,满足
的所有复数
称为
次单位根,若一个
次单位根满足对任意小于
的正整数
,都有
,则称该
次单位根为
次本原单位根,规定1次本原单位根为1,例如当
时存在四个
次单位根
,因为
,
,因此只有两个
次本原单位根
,对于正整数
,设
次本原单位根为
,则称多项式
为
次本原多项式,记为
,规定
,例如
,请回答以下问题.
(1)直接写出
次单位根,并指出哪些是
次本原单位根(无需证明);
(2)求出
,并计算
,由此猜想
(无需证明);
(3)设所有
次本原单位根在复平面内对应的点为
,复平面内一点
所对应的复数
满足
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65dc6548571fb407b11bd8e20fc9a860.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c6e88d54d09eb7a4c8e934e296f8357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/874631e1de2f86a9c0c8465db03fc7e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac3649308b528fd56545ba102dc42d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5948aa4e0018b7e8e2d57f350ca5c718.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4291b447692fcd6becaeda53b10095c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6f79fedb9f7313e14fe9b7823011e5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd52d1543e19aea6fd5742a4328ddf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc1b027c5aac5d97ee4eb33005fd9dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09a213315196fb915fe48505cc9f65a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e89220eb96a4757f2988362bc04e80c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ba63d9bf401b254e5857cab89cf27e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/721b4bc405a8fe427893f4656e5918dd.png)
(1)直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3304e23f3b0f9569c4140ca89b6498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3304e23f3b0f9569c4140ca89b6498.png)
(2)求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ac0b017e80bfa576ff04b9a3a934927.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b962b1bcf29fcfc66941ca4fc14c5ea1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/719446337e4e8f52cf56bba204db24ed.png)
(3)设所有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c748e40ba21ac5063d3bccaa57ef278.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588283c9af6716f9f56adec76399863a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b31f74f1bf8831816cede046b1bf50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee56eb9a6c76435dfec59163c289c9fe.png)
您最近一年使用:0次
2024-05-26更新
|
244次组卷
|
2卷引用:湖南省郴州市第一中学等校2023-2024学年高一下学期5月联考数学试题
名校
解题方法
5 . 现定义“
维形态复数
”:
,其中
为虚数单位,
,
.
(1)当
时,证明:“2维形态复数”与“1维形态复数”之间存在平方关系;
(2)若“2维形态复数”与“3维形态复数”相等,求
的值;
(3)若正整数
,
,满足
,
,证明:存在有理数
,使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9dc4e868a310c371ff88075d8a966a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef9d830212489b316bb052455098108e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc8299790d98621b87e73212a2ebb91.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/905dd10639c9fef5ef8d66a124756140.png)
(2)若“2维形态复数”与“3维形态复数”相等,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c136aaf9b5dedec254a92ce302f4a70c.png)
(3)若正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94742ebbb028c50d7a58e3e8f4ab329c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35490c12e57ecd91af9934cb17b5c927.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ed110fbfeb14003270a1039ba174d0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f02f2606180ffeda602ff9ae747af6f.png)
您最近一年使用:0次
2024-05-11更新
|
721次组卷
|
3卷引用:广西南宁市第二中学2023-2024学年高一下学期5月月考数学试卷
名校
6 . 我们知道复数有三角形式,
,其中
为复数的模,
为辐角主值.由复数的三角形式可得出,若
,
,则
.其几何意义是把向量
绕点
按逆时针方向旋转角
(如果
,就要把
绕点
按顺时针方向旋转角
),再把它的模变为原来的
倍.
已知圆
半径为1,圆
的内接正方形
的四个顶点均在圆
上运动,建立如图所示坐标系,设
点所对应的复数为
,
点所对应的复数为
,
点所对应的复数为
,
点所对应的复数为
.
,求出
,
;
(2)如图,若
,以
为边作等边
,且
在
上方.
(ⅰ)求线段
长度的最小值;
(ⅱ)若
(
,
),求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8865c033cf9f1652c22297f8669623a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c5ff0388004b8b37c9eeaef46a27325.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb5e350620ff7aab6fefc18b88573c76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9979e52e407b34b82c2f7a6788743feb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a30deb1f343048675b9b231620369668.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e93fa313adc4ac7608ba9449fd755212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d442c6f979cd09bb7f8acf01d70130fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1cd5637ee5adad7e0376422ed181edf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba62723e05ce6cce4d089d8b201fa857.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b3e95410f3b4fcb0cba425b521d1f67.png)
已知圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](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/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa224ed9be8766a4d0b5138bd57de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a67a742d2a43e907fb1c3a1bdf1d6a9.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/2120c2838188e2affa317160f24251f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa224ed9be8766a4d0b5138bd57de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a67a742d2a43e907fb1c3a1bdf1d6a9.png)
(2)如图,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96499747e4aea990f4b878eea8d73ab7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c499b1f470978c4f8cc05ffdebc2e961.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
(ⅰ)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
(ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895928688d7557d94ccafa7ad073edfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2357ed8dbe6d3911738b8f747d670d3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
您最近一年使用:0次
2024-05-04更新
|
613次组卷
|
3卷引用:贵州省毕节市赫章县乌蒙山学校教育集团2023-2024学年高一下学期5月联考数学试题
贵州省毕节市赫章县乌蒙山学校教育集团2023-2024学年高一下学期5月联考数学试题重庆市南开中学校2023-2024学年高一下学期期中考试数学试题(已下线)5.3复数的三角形式-【帮课堂】(北师大版2019必修第二册)
名校
7 . 利用平面向量的坐标表示,可以把平面向量的概念推广为坐标为复数的“复向量”,即可将有序复数对
(其中
)视为一个向量,记作
,类比平面向量的相关运算法则,对于复向量
,我们有如下运算法则:
①![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c2e1a17e5fc03e723da511f9b09e90c.png)
②
;
③![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0822271cf00be40e775f82a7080afad.png)
④![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb467f8f90ba3c6ed8dcd5e9b385c5c0.png)
(1)设
,
为虚数单位,求
,
,
;
(2)设
是两个复向量,
①已知对于任意两个平面向量
,(其中
),
成立,证明:对于复向量
,
也成立;
②当
时,称复向量
与
平行.若复向量
与
平行(其中
为虚数单位,
),求复数
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1b39933abd56981a8bbcddf4b034df6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6227fc796e13ab80f2b5ccd4a8769588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2adcabafb9c785403537056956f8ad8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20bc37ab790b711f0c35a641b9bb4ae3.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c2e1a17e5fc03e723da511f9b09e90c.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09eeba4bb1dfe0975a02c38fcc1b49a3.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0822271cf00be40e775f82a7080afad.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb467f8f90ba3c6ed8dcd5e9b385c5c0.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a6650a5e44b601c5a50b348b6d179d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcb29b663cf1fb1ff2b3c9d1a7aebf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0631b4e25deaa9d9ba17dff5a3463605.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58530dec593308e46ac5af69be13a2f7.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bb379314dccab07cc53674173cde64d.png)
①已知对于任意两个平面向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55e252e7c38b0a709ffe7c908677253b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751f52d4cf239511828e3960e41c61df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e255fd67f8f2318ebdb67c4a8c8496cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbc8b1e5c55bce554fc4a0de48279a8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72659ca68087f1aa5d442637ed3c41ad.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebd1c6734cf3d125541de04002b00012.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2780422eefb9e85b89074a1ba2a159d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433a8c622b44e1aa29e9989e6978dd7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77b3a6ecb6225c55fa164d801dff391.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c70d0dafec614d310400b919671739.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3db22264e0df8e232e97934cb4e8b1ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66e9585a1da28d403536ea48b4c37a3e.png)
您最近一年使用:0次
解题方法
8 . 记复数的一个构造:从数集
中随机取出2个不同的数作为复数的实部和虚部.重复
次这样的构造,可得到
个复数,将它们的乘积记为
.已知复数具有运算性质:
,其中
.
(1)当
时,记
的取值为
,求
的分布列;
(2)当
时,求满足
的概率;
(3)求
的概率
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57640b1fd3198b4923c61a7c5fb53c61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9dc4e868a310c371ff88075d8a966a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6772d33e3e6b46834bfa6710d31d2f0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2e9c3910f721303685d56a8aeaccec2.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2d3df37e73a8abea815f37dbb3fff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080bca5fd0f1ac5d834074b3e00f92bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cf2903ee65254ac0df06c3171cfec4f.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da7a625440c113848a5d7ad526d153c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
您最近一年使用:0次
名校
解题方法
9 . 复数是由意大利米兰学者卡当在十六世纪首次引入,经过达朗贝尔、棣莫弗、欧拉、高斯等人的工作,此概念逐渐为数学家所接受.形如
的数称为复数,其中
称为实部,
称为虚部,i称为虚数单位,
.当
时,
为实数;当
且时,
为纯虚数.其中
,叫做复数
的模.设
,
,
,
,
,
,
如图,点
,复数
可用点
表示,这个建立了直角坐标系来表示复数的平面叫做复平面,
轴叫做实轴,
轴叫做虚轴.显然,实轴上的点都表示实数;除了原点外,虚轴上的点都表示纯虚数.按照这种表示方法,每一个复数,有复平面内唯一的一个点和它对应,反过来,复平面内的每一个点,有唯一的一个复数和它对应.一般地,任何一个复数
都可以表示成
的形式,即
,其中
为复数
的模,
叫做复数
的辐角,我们规定
范围内的辐角
的值为辐角的主值,记作
.
叫做复数
的三角形式.
,
,求
、
的三角形式;
(2)设复数
,
,其中
,求
;
(3)在
中,已知
、
、
为三个内角
的对应边.借助平面直角坐标系及阅读材料中所给复数相关内容,证明:
①
;
②
,
,
.
注意:使用复数以外的方法证明不给分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c0c72c17b74f9a5a175ec2b9d77e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c789a7cd7ac2b8b96dc879c6c8161ee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03b011f69dfc5262a3d82f64676739b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22fe68ea0bf368925909606949da47f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0bf9b2a7378e73e9fd06c693bfda07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/368f9e12546277731776041c73dbe58c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80e80e5baee553150c67a91f1017a7be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb6958203312cbda12fd2683a819dd9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e472aea001d179c284e3687a9aacf384.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b40b6895776e0807c2baecbc8f33a8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e472aea001d179c284e3687a9aacf384.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/4b40b6895776e0807c2baecbc8f33a8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec45476379fb51aa1ef0a93f849f48be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e283f3168c0b5e8f68dda92c43651e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eec3e684af41f9ed4db5b931b9ccfb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f56cfb41ee7cb758fee138ab09e0d13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec45476379fb51aa1ef0a93f849f48be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b40b6895776e0807c2baecbc8f33a8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3665b2dac544bfb2a0c175f95a480e1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b3a15906b84b98a3ac563e7e2ec9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fe615164ed2995bdeea0f5b0ba94231.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec04f844e8fd9d9b1ef835e23eaa54e2.png)
(2)设复数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd87d6e1987cf95d102de1045d3722a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/398d8980d3ec9fbf536a1efa6312a19a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0492634f27279b6470798af0185be67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c723970ac738976e0130e1438b67058.png)
(3)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1501d4035822b34fcc2378f1e316f159.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e63471f592531e46277365ed319e2acc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b923694c299d953e02cb79dfcef9f56a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ce2f54d69a5987c1de19da53342811.png)
注意:使用复数以外的方法证明不给分.
您最近一年使用:0次
2024-03-12更新
|
591次组卷
|
4卷引用:重庆市缙云教育联盟2023-2024学年高一下学期3月月度质量检测数学试题
重庆市缙云教育联盟2023-2024学年高一下学期3月月度质量检测数学试题黑龙江省哈尔滨师范大学附属中学2023-2024学年高一下学期开学考试数学试卷(已下线)模块五 专题六 全真拔高模拟2(已下线)第七章:复数(新题型)-同步精品课堂(人教A版2019必修第二册)
名校
解题方法
10 . 已知i是虚数单位,a,
,设复数
,
,
,且
.
(1)若
为纯虚数,求
;
(2)若复数
,
在复平面上对应的点分别为A,B,且O为复平面的坐标原点.
①是否存在实数a,b,使向量
逆时针旋转
后与向量
重合,如果存在,求实数a,b的值;如果不存在,请说明理由;
②若O,A,B三点不共线,记
的面积为
,求
及其最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dd0914dc4d4c7f75710ff460a286fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eadf8a54b61d7a1d665b54dc4eabc6e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d09089e4a9349c174afed865e46405c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d82854993f716cd6eec9517e9fdbdec6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2e594eccf04968ebdb3b042ac0f50a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e4e2b866b0043a32fc78326553841d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a67a742d2a43e907fb1c3a1bdf1d6a9.png)
(2)若复数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa224ed9be8766a4d0b5138bd57de0f0.png)
①是否存在实数a,b,使向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc9656d8286c4d6fa309d6ae347c89e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f605ec0729ce6d72237ad662a06862.png)
②若O,A,B三点不共线,记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b83beedb3438153e6f728545fe3e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0511160875d61316303d53153caf6a63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0511160875d61316303d53153caf6a63.png)
您最近一年使用:0次
2023-07-13更新
|
1248次组卷
|
15卷引用:上海市朱家角中学2023-2024学年高一下学期第二阶段质量检测数学试题
上海市朱家角中学2023-2024学年高一下学期第二阶段质量检测数学试题(已下线)专题7.4 复数运算的综合应用大题专项训练-举一反三系列-(已下线)第12章 复数单元综合能力测试卷-【帮课堂】(苏教版2019必修第二册)(已下线)第一次月考卷01-《重难点题型·高分突破》(人教A版2019必修第二册)(已下线)第一次月考解答题压轴题十六大题型专练(2)-举一反三系列(人教A版2019必修第二册)(已下线)单元测试A卷——第七章 复数单元测试A卷——第七章 复数江西省宜春市高安二中,丰城九中,樟树中学,万载中学,宜丰中学五校联考2023-2024学年高一下学期期中考试数学试题上海市宜川中学2023-2024学年高一下学期期中考试数学试题吉林省白山市抚松县第一中学2023-2024学年高一下学期5月期中考试数学试题(已下线)高一下学期期末复习解答题压轴题二十四大题型专练(1)-举一反三系列(人教A版2019必修第二册)(已下线)专题07复数期末8种常考题型归类-《期末真题分类汇编》(人教B版2019必修第四册)(已下线)专题04复数-期末考点大串讲(沪教版2020必修二)辽宁省锦州市2022-2023学年高一下学期期末数学试题(已下线)第六章 平面向量与复数 综合测试B(提升卷)