1 . 设数集
满足下列两个条件:(1)
;(2)
,若
则
. 则下论断正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8518dab1e2a5525a4311a8cca1700cb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c56e6a5f7c06d61bc833ac4bcb61b89a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac8c98b4e75cc7d3a018a9ec34ee522.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a11a069688e4c797fcf527eab15afa82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8551a883fdf0a472d21a5aff7b080005.png)
A.![]() |
B.a,b,c,d中必有一个为1 |
C.若![]() ![]() ![]() |
D.![]() ![]() |
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2023·河北·模拟预测
名校
解题方法
2 . 若复数
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0784ba9206d8a1c9b3c8191c9af6d0f7.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c3284ac12983830b8d7606a8dc5724b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/497d68cdd1ae98ab32060ff5f83cf2b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0784ba9206d8a1c9b3c8191c9af6d0f7.png)
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2021高三·全国·专题练习
3 . 已知复数
,
,
且
.
(1)若复数
对应的点
在曲线
上运动,求复数z所对应的点
的轨迹方程;
(2)将(1)中的轨迹上每一点按向量
方向平移
个单位,得到新的轨迹C,求C的轨迹方程;
(3)过轨迹C上任意一点A(异于顶点)作其切线,交y轴于点B,求证:以线段AB为直径的圆恒过一个定点,并求出此定点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb3584a06ae295bff9b856edb76f79ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c6d334cdda2dffb482842af63581e86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87934d255b8739b91da1a1d45b3cbd96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e852a7e99784df458359a650dca5cbf.png)
(1)若复数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23e0db273061d0331e4e5da9ff1e955e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd03a293309d5bfd2ef1bb9d562ffafa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
(2)将(1)中的轨迹上每一点按向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcb0aef34a4b4b7232633192e979d394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/700762875cb4f15b556a72f10a42ac9f.png)
(3)过轨迹C上任意一点A(异于顶点)作其切线,交y轴于点B,求证:以线段AB为直径的圆恒过一个定点,并求出此定点的坐标.
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