1 . 满足使
为纯虚数的最小正整数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7259e809791dc12137a2a6eb40ec3d38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
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2013高三·湖南·竞赛
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2 . 若复数x满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923072465050a3c473fb4a09636f2562.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ff5af65606d766437e38ff643468fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923072465050a3c473fb4a09636f2562.png)
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3 . 已知复数
满足
(i为虚数单位),复数
的虚部为2.则
为实数的条件是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69a7516303b3dd7c28b3b3fcffd538ca.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e9728843e46bb57db1ad22dbe0a2f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa224ed9be8766a4d0b5138bd57de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6da4e6752d8c8a0705194f2b2f16ab5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69a7516303b3dd7c28b3b3fcffd538ca.png)
您最近一年使用:0次
2018-12-16更新
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122次组卷
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3卷引用:2011年湖南省高中数学竞赛试题