1 . 复数
(
为虚数单位)的共轭复数是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dca914596a7dcab39fb48f8aaa68df55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-10-12更新
|
328次组卷
|
5卷引用:河南省信阳市2021-2022学年高二下学期期末数学(文)试题
名校
解题方法
2 . 设复数
,
是其共轭复数,若
,则实数
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbb7977366db8b2e9408d19696c8b00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fcfebd9f5a57036e6df6b6e14865da3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/779f5c13971d32d4a90a5f7b70703a0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
A.4 | B.3 | C.2 | D.1 |
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名校
3 . 若
是
的共轭复数,且满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d67321ace1e6b3be0fc0e5e8130022.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d41042207515dd2e8349c805e6aee400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c69ec45d10c735417c038cce978f8184.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d67321ace1e6b3be0fc0e5e8130022.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-05-28更新
|
315次组卷
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2卷引用:河南省息县第一高级中学2017届高三下学期第三次适应性测试数学(理)试题
解题方法
4 . 关于复数
的四个命题:
:复数
对应的点在第二象限,
:
,
:
的共轭复数为
,
:z的虚部为
.
其中的真命题个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/958e72bf154935954235c3a0e85f7b20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be646cd52d7f2f1714e7542e75810f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adad9633b73dfbbb3d84b4f15979e99e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba9cbabe112a88187796bf19763012dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87b21b872313f7d8c5b606981f954a1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a4ecbc01377f27f2b180a28ce9e15b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc119550ce4fc5f3d1daf996e7243bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
其中的真命题个数为( )
A.4 | B.3 | C.2 | D.1 |
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2017-05-07更新
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312次组卷
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2卷引用:河南省信阳市2016-2017学年高二下学期期中考试数学(理)试题
名校
解题方法
5 . 已知复数
,a为实数,若
,则复数
的共轭复数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f903edb0eb261a3fe29287a6760eb1ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbb7977366db8b2e9408d19696c8b00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22091522a894c3373de662476bb2eb99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f903edb0eb261a3fe29287a6760eb1ca.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2016-12-13更新
|
472次组卷
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5卷引用:【全国百强校】河南省信阳高级中学2017-2018学年普通高等学校招生全国统一考试模拟测试数学(文)试题(一)