1 . 复数
,
为虚数单位,
为z的共轭复数,则以下结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f7e946a9fdde2b92c2dcc718b7f530d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d41042207515dd2e8349c805e6aee400.png)
A.![]() |
B.若![]() ![]() ![]() |
C.![]() |
D.若![]() ![]() |
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解题方法
2 . 已知
是虚数单位,则下列说法正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
A.![]() |
B.“![]() ![]() |
C.若复数![]() ![]() ![]() |
D.若复数![]() ![]() |
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2021-08-15更新
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3卷引用:福建省福州市八县(市)协作校2020-2021学年高一下学期期中考试数学试题
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3 . 已知
,复数
(其中
为虚数单位)
(1)当实数m取何值时,复数z是纯虚数;
(2)若复数
在复平面内对应的点位于第一象限,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2725a89d93c791f7a0098f4964587905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/841ff738ea2b8a15af4d072507e866cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
(1)当实数m取何值时,复数z是纯虚数;
(2)若复数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dd25612c4c7c414608f80acf63b32d9.png)
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2卷引用:福建省福州市八县(市)协作校2020-2021学年高一下学期期中考试数学试题
4 . 复平面内有
,
,
三点,点
对应的复数是
,向量
对应的复数是
,向量
对应的复数是
,求
点对应的复数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55ca6d2b281682c03a857a6821e38e1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be64d59ac6538a0f4d79fb825e082081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/318b481b5f7f4694d6542882d3dc61c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d792a2aa25763e14cc2863be3887000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f567f5798b307735efd3fee1e01b3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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解题方法
5 . 若
,其中
,
是虚数单位,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e0aeeb125cfb42e33094594d4381f5.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b4a668a006c16f09cc15c83ba003abd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ca22fc12ade9e60dbc749ba5cfa73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac2ec53a0769fe1929c3f36514dee976.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e0aeeb125cfb42e33094594d4381f5.png)
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解题方法
6 . 已知
是复数,
,
均为实数(
为虚数单位),对于复数
,当
为何值时,
为:
(1)实数;
(2)虚数;
(3)纯虚数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/005f6a19fe7b2709a8447830ea0a024a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c32849bfd957f6f3bba6f29dfefc388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/624d3633e45a338e16bf0fdd89910497.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/595044a7750ab4f84519041979c3d780.png)
(1)实数;
(2)虚数;
(3)纯虚数.
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解题方法
7 . 已知
,其中
为虚数单位,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fb2f87452a6a5fe9dd73766b16d66bf.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11cd452cdf00d99550f17dde59599e91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fb2f87452a6a5fe9dd73766b16d66bf.png)
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8 . 若
(
是虚数单位)是纯虚数,则实数a的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f30d813b6c7db0c0a6f9d62c120ee11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
A.![]() | B.0 | C.1 | D.2 |
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2卷引用:福建省宁德市部分达标中学2020-2021学年高二下学期期中联合考试数学试题
9 . 已知i是虚数单位,复数
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882bff376e1d71865bd23b747ef78a66.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11f07e7ffbb64bde66d2320a1c2d695a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882bff376e1d71865bd23b747ef78a66.png)
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10 . 已知复数
.
(Ⅰ)求
;
(Ⅱ)若
,求实数
,
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26737a0ac8d78df1456df62be19b4c7c.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de971553ea8a66d7849b138a4a0625c5.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85b6f4dd9e7c030f6ad91681561e6d29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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3卷引用:福建省宁德市高中同心顺联盟校2020-2021学年高一下学期期中考试数学试题
福建省宁德市高中同心顺联盟校2020-2021学年高一下学期期中考试数学试题专题5.2 复数(基础巩固卷)-2021-2022学年高一数学北师大版2019必修第二册(已下线)7.2.2复数的乘、除运算【第二课】“上好三节课,做好三套题“高中数学素养晋级之路