1 . 已知复数
,
,
.
(1)若
,求实数
的取值范围;
(2)若
是关于
的方程
的一个根,求实数
与
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6228b05bb0dee676b9a4b10d2f8fa9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4de20cf4f9c2cdba8e4b3383210998b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2725a89d93c791f7a0098f4964587905.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66b239d9cd9e31bcddbf1cc045feda87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0f4e957ce2b0bdbd7c5c78a844e9b4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
2020-07-15更新
|
325次组卷
|
2卷引用:上海市嘉定区封浜高级中学2019-2020学年高二下学期期末数学试题
2 . 已知复数
,
,则
为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/242ae9206c9d5a4eb16e7af22a51a019.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39380ac7bb3802bef6ee92f673cb236f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fe615164ed2995bdeea0f5b0ba94231.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-07-15更新
|
219次组卷
|
4卷引用:2020年普通高等学校招生全国统一考试 文科数学样卷(八)
解题方法
3 . 关于复数3-4i的说法正确的是( )
①实部和虚部分别为3和-4;②复数模为5
③在复平面内对应的点在第四象限;④共轭复数为3+4i
①实部和虚部分别为3和-4;②复数模为5
③在复平面内对应的点在第四象限;④共轭复数为3+4i
A.①③ | B.①②④ | C.①②③④ | D.①③④ |
您最近一年使用:0次
名校
解题方法
4 . 在复平面内,复数
对应的点为(2,2),复数
对应的点为(1,1),复数
,则
对应的点在第_______ 象限.
![](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/4bd0dc24eb7fc030372efde752bfeaf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
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5 . 下列命题:①若
,且
,则
为纯虚数;②
,则
且
;③
,则
或
;④
,则
;其中正确的命题有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ca22fc12ade9e60dbc749ba5cfa73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f22fec5a381ae8aca93d876e54c79de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4527f734987e0e00d5b8adca42b969de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1cb45531be54c6d7f02de0c19e6f775.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2695835f92683ba5df97d630362d9323.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6afae33365a8ae1103215ce5c15f0bd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4fb4f555f276487d6b5161432a267ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2695835f92683ba5df97d630362d9323.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b18b82d238c80bec3bd5996df66711e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94e29a3e6d968622d192af63ae2f1fa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a7977d7239c13e044382d3bdc9ab015.png)
A.0个 | B.1个 | C.2个 | D.3个 |
您最近一年使用:0次
6 . 设
,若
,
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea77b7c1c49d58da6fbaf2890c65634a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e2f9fbd4c335cac78f1d1bcfc8e1590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a94be7c01c6b1654497eddd82c3b2314.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66a40e2b6c49f849119ad4a3f2e79530.png)
您最近一年使用:0次
7 . 若
,则复数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d67321ace1e6b3be0fc0e5e8130022.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dcf1476a549b276851eca53e10ebad7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d67321ace1e6b3be0fc0e5e8130022.png)
您最近一年使用:0次
8 . 复平面上,
,
对应的点分别为
,
,已知
,且
,
是坐标原点,则在复平面内
是________ (锐角三角形、直角三角形、钝角三角形).
![](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/4bb8477bcc87b1401970171bf57b9ecb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2c1fd680a5d355178273c6d6025eb80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e7dd17f004c36fd824dea2c4ed8e401.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/093613ea9152eb78b80f82a05f169735.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5927f1967a8f72e8fb887edb5023a921.png)
您最近一年使用:0次
2020-06-26更新
|
248次组卷
|
3卷引用:沪教版(上海) 高二第二学期 新高考辅导与训练 第13章 复数 13.3(2) 复数的减法
9 . 在复平面上,如果
,
对应的复数分别是
,
,那么
对应的复数为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9795e7f5cb9b366776c41d8f3f43942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be64d59ac6538a0f4d79fb825e082081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52e4b151e42177c22e74cb36f9988d18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c267e2135e714e898767018a0327775.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d792a2aa25763e14cc2863be3887000.png)
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10 . 设复数
,
满足
,
,
,求
.
![](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/1e2f9fbd4c335cac78f1d1bcfc8e1590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc53efa0c7df310140f3b45071817507.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b9a9276dd89deb42570ffe692e4a12a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66a40e2b6c49f849119ad4a3f2e79530.png)
您最近一年使用:0次