名校
1 . 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
2 . 欧拉公式“
”被誉为数学史上最美公式,公式的成立蕴含了复数的三角表示与指数表示:
,其中
,
是以x非负半轴为始边,复数z对应的向量
所在射线为终边的角,比如![](https://staticzujuan.xkw.com/quesimg/Upload/formula/facfc30e6146508572e5df95ef1b8092.png)
.复数指数形式的引入方便了复数的开方运算,比如![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c30c389f57947ab7527ff9229f83560.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0de50b12661ac2bf0c62c1a265caf849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9221e55c83ede306dd4c26a94af8534.png)
,则
的结果可以是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c027518ad4545ffd06d78ced9851872e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797756321d855a9434ed0b049ced6566.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f48aa30900adc9205a6810d31d92e8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d850c2157b5355cb1c718b4577483cb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/facfc30e6146508572e5df95ef1b8092.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca1924ae8b4bee5c818157f9c930879d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c30c389f57947ab7527ff9229f83560.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0de50b12661ac2bf0c62c1a265caf849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9221e55c83ede306dd4c26a94af8534.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/590bd044eed840a96b6ee9da967b5f37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58f3d968e117fffa07a441798da9a99c.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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3 . 若e为自然对数的底,则满足
,且
的复数z的个数为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8ec0e75b252dde0973ef2efe32f9577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f92c6a49d8c173eb40188da78246103.png)
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4 . 设复数
.则
的值为__________ (用数学作答).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d70f81eb83937490c4ebb6d9a9fb0fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7cd38a1ff38977756c5b6af8371b70a.png)
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12-13高三上·全国·单元测试
5 . 已知复数
满足,复平面内有
,其中
,点
分别对应复数
,如图所示,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b043be463a12c01175d22d744aa20c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa8cee7d2463f6f7d352e8b65f47cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8e9ec412ea0355e4e5cd06c60e5fee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/905eb553cebd86cb7a41d29200b4f9af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://img.xkw.com/dksih/QBM/2012/2/11/1570730344800256/1570730350297088/STEM/2adb9405aeac4f92aa47114459e661ed.png?resizew=229)
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6 . 给定实数
、
、
.已知复数
、
、
满足:
求
的值.
![](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/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/d1363c663f843d356cc5539100393ffa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da79a31a46bafb750eacb542bb59cd41.png)
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7 . 设
,其中
为质数.对
的一个子集
,如果
中所有元素的和(空集的元素和规定为
)为
的倍数,则称
是
的一个“倍子集”.试求
的所有倍子集的个数
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a26e093e724f3c26f1eaf8db779bf2f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
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8 . 设
,其中
和
都是实数,且
.证明:若
,则对一切正整数
,均有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0f167a87f1dfceaf858d4dde6ee94ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3fb0c9c7e30bbc0ec8c3521577ee4fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38335830b93ac4d99c28a8e209eecb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/921c99563c54509e2ebf587dfdb26e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/042235c88be02463c0b7bef603ae7e18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58edc69cbf7d0d5d1ce8a1dc6c125af5.png)
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9 . 设非零复数
满足
,则代数式
的值是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4e48bdc43f37bb361303f6e8ffd2175.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4947fd294688c7b53aa2124ca01261a3.png)
A.![]() | B.-1. | C.1. | D.以上答案都不对. |
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10 . 若复数
满足
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dbebbc7b2d8677ad057247cd6b2c0d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b626bfc67956dc3f13df12b53038e07.png)
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