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1 . 下列命题错误的是( )
A.复数不能比较大小 |
B.![]() ![]() |
C.若实数a,b互为相反数,则![]() |
D.若复数![]() ![]() ![]() |
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2023-05-03更新
|
361次组卷
|
3卷引用:湖南省多校2022-2023学年高一下学期期中联考数学试题
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2 . 在下列命题中,①若
为复数,则
为非负数;②互为共轭的两个复数的差为纯虚数;③若
(
,
),则
(
是虚数单位),一定正确的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ea3cc01ce7266cdf0fd73fd50d23c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.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/e1866297d5ea438206efeb1d59981952.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
A.0 | B.1 | C.2 | D.3 |
您最近一年使用:0次
2021-08-21更新
|
430次组卷
|
4卷引用:湖南省常德市淮阳中学2021-2022学年高二上学期期中数学试题
3 . 在复平面内,复数
(i是虚数单位,
)是实数,其对应的点为
为曲线
上的动点,则
与
之间的最大距离为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2012a3d091c1e4e8eefb319ea114c26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd9218a657b17654c5d757a6f7dee9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1090ad8893be65df8ad18b7025402fb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85b3a21fc333f0c9e05b746815af6b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9f50605db5d5f8f3a01ee8e474a112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8b9ad2fcfff3dd546c5fdbedfe6238.png)
A.4 | B.![]() | C.![]() | D.2 |
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