名校
1 . 已知复数
根据下列条件,求
值.
(1)
是实数;
(2)
是虚数;
(3)
是纯虚数;
(4)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c0b9480f9807b74bbf33417e85dcdb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/277b835e4ccd3eb574ece09ad834f0de.png)
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2016-12-04更新
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