1 . 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 |
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解题方法
2 . 已知
,则
的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/300fe86d8e503961f246a589e294dd49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a9a6b5a9e1bdfc80b664a398ef4846e.png)
您最近一年使用:0次
3 . 已知
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061b878f4e056cf5be4ae842694e2f07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1d662c5f732866a92ff3f948f6d967a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef5566cf02f5c1d3f3cf9cb55160a728.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04318923ba6520c1de510e1d9f735914.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061b878f4e056cf5be4ae842694e2f07.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
4 . 设
,
,
,
,求复数
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c580c5f9a8729e4cf2544d0a8f74e08f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea77b7c1c49d58da6fbaf2890c65634a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46569f73f22e8cdc14fdcc0a702c9a9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e1cba19e0654f68334ed98fe2df770.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa224ed9be8766a4d0b5138bd57de0f0.png)
您最近一年使用:0次
5 . 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)
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6 . 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)
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7 . 若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d67321ace1e6b3be0fc0e5e8130022.png)
________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545141bbe7cc66d18946a129179d8df1.png)
________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9b106d8edf801bbcc1c111b855fd986.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3fe7ae28b7f876d66d59a5fc2c8c2cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d67321ace1e6b3be0fc0e5e8130022.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545141bbe7cc66d18946a129179d8df1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9b106d8edf801bbcc1c111b855fd986.png)
您最近一年使用:0次
解题方法
8 . 方程
有实数根,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9780942d576893d067daace48a49ec9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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9 . 对任意的复数
,
证明:
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa224ed9be8766a4d0b5138bd57de0f0.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ee028394345d17bbc55868935e3126c.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/622e0a3909431492467887938381948e.png)
您最近一年使用:0次
2020-06-25更新
|
104次组卷
|
2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(1) 复数的加法
10 . 设复数
,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45c6e885c456912f81ac9d1ca24aab15.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/313e220d04501f972ecf66b2d2e25e41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4ba83c086a5168764a886afb9f4928c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4208d5e3eb8f6a727c18183b52144d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45c6e885c456912f81ac9d1ca24aab15.png)
您最近一年使用:0次