1 . 给出下列四个命题:①若
,则
;②若
,且
,则
;③若复数
满足
,则
;④若
,则
在复平面内对应的点位于第一象限.其中正确的命题个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/255483db09b1e523a4fcc1f618b98ec4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61a3363aaa23cf3d6e1a0a637e29ba64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ca22fc12ade9e60dbc749ba5cfa73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f47f2009bcbf3cb4906e4e7e969ad87b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea7f53c25f2b01b941bcb7e06c1813c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaa72cef7840f8e14c5495a5fbcbcf49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e59e6b4354d7d33276c611ff3a3327f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fd164f394b4a681a13b4a4810d129b0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
解题方法
2 . 已知复数
满足方程
,则
的最小值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9a8fb7049e5813ec75c7bfdebb7d25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d974bddf56c9159bfc1116cc9a898b65.png)
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2020-04-17更新
|
271次组卷
|
2卷引用:山东省威海市文登区2018-2019学年高二下学期期末考试数学试题
名校
解题方法
3 . 已知复数
满足
,则
的最小值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/782df778be95ec99ebbee91ec8709b22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a3c5f542ca25e9963e9cf733ab8b2c7.png)
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2020-04-09更新
|
580次组卷
|
5卷引用:山东省临沂市2018-2019学年高二下学期期末数学试题
4 . 若复数
(
为虚数单位),则
( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e93c74652bdb4c1639c84e2f8dc8d7df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882bff376e1d71865bd23b747ef78a66.png)
A.![]() | B.![]() | C.1 | D.8 |
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5 . 已知复数
,若
,且
在复平面内对应的点位于第四象限.
(1)求复数
;
(2)若
,求实数
,
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19dadbf991482e61fd1a57ff76934316.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaa72cef7840f8e14c5495a5fbcbcf49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
(1)求复数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9899763c28d7c109e9acae6cabe64f26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次
2020-03-18更新
|
261次组卷
|
2卷引用:山东省临沂市沂水县2018-2019学年高二上学期期末数学试题
6 . 已知
.
(1)若
,求
.
(2)设复数
满足
,试求复数
平面内对应的点
到原点距离的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f20b3e5c689242897ca18789d737b6c9.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee10516d3f4bdbd7d91f74d5185e440e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)设复数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46d2f259b3f1a9e5ad095a11c1df9350.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5941174d27cb868d8433aad2f55b6a7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0203b006524305c3d8ee0b6c34cd872b.png)
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