1 . 已知复数
,则
为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c7413097b62bdf2ac2f627d3ed6f508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1245ed74a632317d3a0a106aa9d02eaf.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-07-05更新
|
211次组卷
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2卷引用:四川省乐山市2021-2022学年高二下学期期末考试数学(文)试题
2 . 已知i为虚数单位,复数z满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61b6c413a3cec56985622955bce8d872.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e0aeeb125cfb42e33094594d4381f5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-07-02更新
|
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3卷引用:四川省成都市蓉城名校联盟2021-2022学年高二下学期期末联考理科数学试题
3 . i为虚数单位.计算![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e3581786aee6d02521bfba73dc1fcb7.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e3581786aee6d02521bfba73dc1fcb7.png)
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名校
4 . 已知
为虚数单位,若复数
的实部与虚部相等,则实数
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7060632fdd35f9a56f07bfad98796119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.-3 | B.-1 | C.1 | D.3 |
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解题方法
5 . 设复数
(其中
),
.
(1)若
是实数,求
的值;
(2)若
是纯虚数,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d73ae3bc9b7c3a67ae6f515dcc40e60b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c8f3e2766c6dfb024a7260fd554190c.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e4e2b866b0043a32fc78326553841d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fe615164ed2995bdeea0f5b0ba94231.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec04f844e8fd9d9b1ef835e23eaa54e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d8b3f66119c2ce542984d12eb2b6b77.png)
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2022-05-09更新
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6 .
是虚数单位,已知数列{
},若
,求该数列{
}的前
项的和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7e1c1f12097c7b8882c0e155072702f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b17a9b9bb8bf6bb9865e37f204da5c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4baee584eeab5bc90bed8ee318a56b8b.png)
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2022-04-27更新
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2卷引用:四川省凉山州西昌市2021-2022学年高二下学期期中考试数学(文)试题
7 . 若
(其中
为虚数单位),则复数
的虚部是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/057c3d6e88a3c423ddee96766ce749fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
A.![]() | B.![]() | C.![]() | D.2 |
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2018-12-17更新
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