名校
1 . 已知复数
满足
(其中
为虚数单位),则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e0aeeb125cfb42e33094594d4381f5.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b31cc8f92c837cbbddd7d6af27dd1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/579743813856e2a9183f5ec6eaaefbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e0aeeb125cfb42e33094594d4381f5.png)
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名校
2 . 已知复数z满足
,则z的虚部为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0ddccb24df6109adf59988ee6fefa98.png)
A.![]() | B.1 | C.![]() | D.-i |
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名校
解题方法
3 . 已知方程
(其中
为虚数单位)的两根分别为
,
,则有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb9c56f22355102f1b14227515f17847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/579743813856e2a9183f5ec6eaaefbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa224ed9be8766a4d0b5138bd57de0f0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 若复数
,
为虚数单位,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a9c395e038dce3d2672b4200aaca3eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
A.![]() | B.![]() |
C.![]() ![]() | D.若![]() ![]() ![]() |
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5 . 若虚数
是关于
的实系数方程
的一个根,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934d37c81b2266c7b86bcc11afaf5f91.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec98bcde0ea979514029766fc7656aa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e1ba2fe89f49d46f0b2e37eccbaf22c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934d37c81b2266c7b86bcc11afaf5f91.png)
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解题方法
6 . 复数
,其共轭复数为
,则下列叙述正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afc933d8e17ad3edfe04a3d4a2d0716d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fcfebd9f5a57036e6df6b6e14865da3.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
7 . 已知复数
,
,且
在复平面内对应的点在第一象限,则以下结论正确的为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db439eae71afd7b462a07c61d3861330.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66fd8fc29dd2c3ed210b81fe7c29eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
8 . 若
为纯虚数(
为虚数单位),则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e96f7381a5ab125342610ae55b6d7d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
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解题方法
9 . 已知
为复数,
为实数,且
为纯虚数,其中
是虚数单位.
(1)求
;
(2)若复数
在复平面上对应的点在第一象限,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/005f6a19fe7b2709a8447830ea0a024a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e649ff3d33893d901c023a28f4f7ab83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c042c0c7e253a65f770583c5c6696770.png)
(2)若复数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8148c1040da44d83ad5fd8bb1c91ad69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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10 . 已知复数
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac8dc91893a53d2bd5d804fd7c816c24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e0aeeb125cfb42e33094594d4381f5.png)
A.2 | B.3 | C.![]() | D.![]() |
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