解题方法
1 . (1)求复数
的模的最小值;
(2)复数
,若
,
,
,求复数
对应的点的集合形成的图形的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f9770d52839a3d7c4034badba0a2c2a.png)
(2)复数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa701dc94f56378824f7b5ec2afa491c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61a0bcbd3c304589176a837ba79fb7ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/606ef9cb8c9c4f61ab2acc4c11fec693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af1d7f79603414b0bea06846041631af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
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名校
2 . 已知复数
,集合
,集合
,
(1)若
使得
(
为虚单位),求
的最小值;
(2)若当
时,集合
有两个子集.
①求
的取值范围;
②求集合
中复数
对应点
形成的复平面区域的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b51e2164fb8db54bbc974c937119f1d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a720a4f314efcf8aacedf407334197f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2129600c6623c8b81c47151440ea9ddd.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/010e6bdfd73b146e42df3f899513183c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d5f6c6c2d42b75cffc3c4adcad1edc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)若当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ad053ae69ea1b0e01aa7e8a93aca3e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c450aa751cacd6442e82062d4b8b1e9.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c64b75adfa934653fb3447a898f3fde.png)
②求集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8b9ad2fcfff3dd546c5fdbedfe6238.png)
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3 . 在复平面内,复数
对应的点为
,
对应的点为
.
(1)求
.
(2)若复数z满足
,则复数z在复平面内对应的点的集合是什么图形?并判断点A与该图形的位置关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb8c1ac253f504497962194df593bb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa224ed9be8766a4d0b5138bd57de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f4535188c0996ec130c8a7aaf08dc66.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fe615164ed2995bdeea0f5b0ba94231.png)
(2)若复数z满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b56c5d57b748a7d5d059955de8558d1.png)
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2022-07-02更新
|
252次组卷
|
2卷引用:河南省安阳市2021-2022学年高一下学期期末数学试题
名校
解题方法
4 . 在平面直角坐标系中,O为坐标原点,满足
的复数
对应的动点
的轨迹记为
.
(1)若
为双曲线,求该双曲线的焦距和a的取值范围;
(2)若
,且直线
与
交于A、B两点,求
的面积
;
(3)若
,过点
的直线
与
有且仅有一个公共点,求
与
的公共点坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23b19a09fd9932787f5fb61b16af7bae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b14ef34caabc3b029b69859580279beb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbb51096f4d54ad3cc2aa72a26151904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a711bf44ed64556c72fbb0e7f42c27f.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25ce60648ea5042ab5eb5702efe651a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
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20-21高一·全国·课后作业
5 . 设全集U=C, A={z|||z|-1|=1-|z|,z∈C},B={z||z|<1,z∈C},若z∈A∩(∁UB),求复数z在复平面内对应的点的集合.
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6 . 在复平面内点A对应的复数为2,点B对应的复数z满足
,且
,
是以
为斜边的等腰直角三角形.求点C到原点距离的最大值及此时点B对应的复数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b70c2519610d6d1d6d0855b0f27dfc5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6aecd620e40fe87a8ad3230bc91deaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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20-21高一·全国·课后作业
7 . 已知复数z1=m+ni,z2=2-2i和z=x+yi,设z=
i-z2,m,n,x,y∈R.若复数z1所对应的点M(m,n)在曲线y=
(x+2)2+
上运动,求复数z所对应的点P(x,y)的轨迹C的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a58c9b59db78d9edf5b9f0e82f1f4228.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533a7b702ada1dd80123e4041271d521.png)
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20-21高一·全国·单元测试
8 . 已知集合A={z||z|≤1},
(1)求集合A中复数z=x+yi所对应的复平面内动点坐标(x,y)满足的关系?并在复平面内画出图形.
(2)若z∈A,求|z﹣(1+i)|的最大值、最小值,并求此时的复数z
(3)若B={z||z﹣ai|≤2},且A⊆B,求实数a的取值范围.
(1)求集合A中复数z=x+yi所对应的复平面内动点坐标(x,y)满足的关系?并在复平面内画出图形.
(2)若z∈A,求|z﹣(1+i)|的最大值、最小值,并求此时的复数z
(3)若B={z||z﹣ai|≤2},且A⊆B,求实数a的取值范围.
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解题方法
9 . 阅读下面问题的解法:
求复数
的模的取值范围.
解:
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/45f4c249-026c-4fd3-9492-1ffd76fc7cf9.png?resizew=181)
如图所示,设点A的坐标为
,点B的坐标为
,则
即为点A、B之间的距离
.
∵点B的轨迹为以O为圆心,半径为1的圆,∴
,因此复数
的模的取值范围是
.
试运用类似上面的解法解下列问题:求函数
的值域.
求复数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3441a58ede2f3bd780d0207c8047127.png)
解:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe803d3c95c4d89ada302952dfccae1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/45f4c249-026c-4fd3-9492-1ffd76fc7cf9.png?resizew=181)
如图所示,设点A的坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43d2ff9ced79c22ff48de8357b806412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7265338f61b72fef35a0746c8b429876.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce0584993cfa0801d603ffca041ecf3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05da40a2d7dab5d6a003906ca19d4749.png)
∵点B的轨迹为以O为圆心,半径为1的圆,∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/946a7572a73a40b3af7a1a80722cc446.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3441a58ede2f3bd780d0207c8047127.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0691c8ee320d0f36d7122d3e5ab0b7ee.png)
试运用类似上面的解法解下列问题:求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/792b0cf62b3db17fc6ea267e0267f001.png)
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10 . 设复数
i,
i,记复数
与
分别对应复平面内的点
和
.
(1)根据复数及其运算的几何意义,求
和
两点间的距离;
(2)已知
(
为正实数)表示动点
的集合是以点
为圆心,
为半径的圆.那么满足条件
的点
的集合是什么图形?并求出该图形的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75407f5349719aba26f58213459793eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/813182be9cff514aaa94ab104764f0ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adcc78b50e4eb2ef6076b0ef4fab732d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2e81521fc8e5fa253ba80fc764529d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42ef89df8e9fbdc2a61417637c5bc248.png)
(1)根据复数及其运算的几何意义,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8b9ad2fcfff3dd546c5fdbedfe6238.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61b3284b97f803dce36872eb8ab805d9.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea79bfb107b4cb7175fdfc4ad2f78ac2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8b9ad2fcfff3dd546c5fdbedfe6238.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61b3284b97f803dce36872eb8ab805d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d348ab8205204b0dec8c556e945f5c0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8b9ad2fcfff3dd546c5fdbedfe6238.png)
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