1 . 已知集合
,
,若
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/549cf1adc2a4358cca0f9f8ce185c289.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90d6d8039967af15e7c5c7ff05b04ac0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a8216a51e8f3648a62ba28d7ae72702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2 . 设
{复数},
{实数},
{纯虚数},全集
,则下列结论中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26308ea6d8f321d27acbd7f9b131f9f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e3ef4881bd7c5860178dbdbc7bba6e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9163ebe812708ee5337d62298c2e3363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a003d67aa8d30160b1e7990b303daaa.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2020-06-26更新
|
287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 13.1(1) 复数的概念
3 . 复数
是实数的一个充分非必要条件是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64b437b5ae818437b732834dac9353a9.png)
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4 .
是复数
为纯虚数的________ 条件(充分非必要,必要非充分,充要).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fef9e230b927a6c6e29321eff180186.png)
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名校
解题方法
5 . 设
,若
为实数,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b657cfa91b6394e4b00fa385a2c0149.png)
________ ;若
为纯虚数,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b657cfa91b6394e4b00fa385a2c0149.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e49f92ca0df89c34e739c6ec2d057303.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b657cfa91b6394e4b00fa385a2c0149.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b657cfa91b6394e4b00fa385a2c0149.png)
您最近一年使用:0次
2020-06-26更新
|
168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 13.1(1) 复数的概念
解题方法
6 . 已知
,设
.当
为何值时:
(1)在复平面上
对应的点在第二象限;
(2)在复平面上
对应的点在直线
上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f4d1f62de959cdd44738e596c9588c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)在复平面上
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
(2)在复平面上
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/512f4c29ff276b7f35052ad4cc255ab5.png)
您最近一年使用:0次
解题方法
7 . 当
为何值时,复数
对应的点在第四象限.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38a33d4de6dea53b8404db880a342e3c.png)
您最近一年使用:0次
8 . 若
,则复数
在复平面内所对应的点在第________ 象限.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5ee797ea6797c06ba5044e647efaea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12d7dab3b8ef47d9e57b49c0c0651dc3.png)
您最近一年使用:0次
9 .
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deb2173af5762c526df75cc363237678.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
10 . 若关于
的方程
有实根
,则
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/631f3d4e1fe556cfb9e01120ad26e963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/255483db09b1e523a4fcc1f618b98ec4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c042c0c7e253a65f770583c5c6696770.png)
您最近一年使用:0次