名校
1 . 在
的展开式中,
的系数为________ .设复数z满足
,则它的共轭复数________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/979fb4524978e69eac5d1fda30ddcef2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdf5b0e287ca97be4a45bbf82bdd35fe.png)
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解题方法
2 . 复数
的共轭复数为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d41042207515dd2e8349c805e6aee400.png)
A.![]() ![]() |
B.![]() |
C.若![]() ![]() |
D.若![]() ![]() |
您最近一年使用:0次
2021-08-04更新
|
559次组卷
|
2卷引用:福建省厦门市2020-2021学年高一下学期期末数学试题
解题方法
3 . 下面命题中错误的是( )
A.![]() ![]() |
B.若两个复数的差是纯虚数,则它们一定互为共轭复数 |
C.若![]() ![]() ![]() ![]() |
D.若两个虚数的和与积都为实数,则它们互为共轭复数 |
您最近一年使用:0次
解题方法
4 . 在复平面内,复数
,
.
(1)当
为纯虚数时,求复数
;
(2)当
时,复数
对应的点记为点A,将点A绕着原点顺时针旋转
到达点
,求
所对应的共轭复数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e88decc77e7e4053a351cb79fef735ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afb5c9a513b06188ee4bdd33b12aa515.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9795e7f5cb9b366776c41d8f3f43942.png)
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名校
5 . 设复数
(其中
,
),
,
(其中
).
(1)设
,若
,求出实数
的值;
(2)若复数
满足条件:存在实数
,使得
与
是某个实系数一元二次方程的两个虚数根,求符合条件的复数
的模的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b306656377d44466d0b78e728e27d61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d285a4c557fc9748105b62ccd94b7859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a76fb4e602f72e5fcfbe022ae631ac7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d24e06e36b1f9d429631b2223bcd7eca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b97b295f88972ba1c7e3cefda0885d.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f072c3a564e36a26d722e585379161ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e37c64fc12b438809bc6d723f359cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若复数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa224ed9be8766a4d0b5138bd57de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
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2021-07-12更新
|
426次组卷
|
4卷引用:上海交通大学附属中学2020-2021学年高一下学期期末数学试题
解题方法
6 . 下列说法中正确的是( )
A.若复数![]() ![]() |
B.若两个复数的积是实数,则它们一定互为共轭复数 |
C.若向量![]() ![]() ![]() |
D.若![]() ![]() |
您最近一年使用:0次
7 . 设复数
(
为虚数单位),则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f7e946a9fdde2b92c2dcc718b7f530d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
A.“![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() ![]() |
D.方程![]() ![]() |
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8 . 对于任意虚数z,
的共轭一定是______ ,
一定是______ ,
一定是______ ,
一定是______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2fa30ba241d9b987da55046e5269959.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a829e8e7de0dfdc331bb568460938f27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/450d38ae1fa6ffdf679f76f9544f8942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f154981a7e3280fa6f40903730013b47.png)
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名校
9 . 下列说法中正确的是( )
A.复数![]() ![]() |
B.“![]() ![]() |
C.![]() ![]() |
D.幂函数![]() ![]() ![]() ![]() |
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10 . 有下列命题,其中真命题的序号有_________ .
①
是函数
的极值点;
②已知
,
是复数,则“
”是“
”的充分不必要条件;
③小明在书写英语单词“error”时,只是记不清字母的顺序,那么他写错这个单词的概率是
;
④
在
上恰有两个不同的零点,则
的取值范围是
.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3daad3a31a3597f75fa109736ed2ebf.png)
②已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa224ed9be8766a4d0b5138bd57de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e13d477ec252f1952efd7d97425bf40c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/591beb5c37dbe8f3d557de6db92e5b3e.png)
③小明在书写英语单词“error”时,只是记不清字母的顺序,那么他写错这个单词的概率是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d781d2c53587db084f4893715b29e078.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bab651f40837493696ebbf5a1b13ad6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2e88ebfb5c0d6cce558b515be06404d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f2ad79532c6bf061003ecb193d2719e.png)
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