集合
(其中
为虚数单位),
,且
,则实数
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e84f5e90803dce78d99f79cad612bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57d3ab6ad6b8810877054dbeaec92dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede280b7d4529ca9afb08bff174225ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.-3 | B.3 | C.3或-3 | D.-1 |
20-21高二·全国·单元测试 查看更多[2]
(已下线)第五章 数系的扩充与复数的引入(基础过关)-2020-2021学年高二数学单元测试定心卷(北师大版选修2-2)(已下线)7.1.1复数的概念(练案)-2021-2022学年高一数学同步备课 (人教A版2019 必修第二册)
更新时间:2021-03-25 11:46:36
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【推荐1】已知集合
,
,若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fdf429976ca5412abad8e2cbf4a2da4.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】已知集合
,
,且
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A.![]() | B.![]() |
C.0、![]() ![]() | D.0 |
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【推荐1】已知a为实数,若复数
为纯虚数,则
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59e5794321ddb43ad716eb6e737ccd79.png)
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A.1 | B.0 | C.![]() | D.![]() |
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【推荐2】设复数
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,则
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A.2 | B.-2 | C.2或-2 | D.1或-1 |
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