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1 . 设复数
,则满足等式
,且大于1的正整数
中最小的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c553c8264069181ba7b9533d305f66d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fcd9bc145f6544a65e90899cb168bf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.3 | B.4 | C.5 | D.6 |
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2 . 设复数z满足|z|=1,且(3+4i)•z是纯虚数,求
.
![](https://img.xkw.com/dksih/QBM/2016/7/8/1572898064506880/1572898100117504/STEM/2eb021bb44aa47a199c3cd526e5949d4.png?resizew=10)
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