1 .
,求证:
的充分必要条件是
,
中至少有一个为1.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea77b7c1c49d58da6fbaf2890c65634a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/523c7ea7352bd6b81578373bce98ab24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d8b3f66119c2ce542984d12eb2b6b77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dff9388eee5c812d183b254d13f461b.png)
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名校
2 . 已知关于
的实系数一元二次方程
的两根为
、
.
(1)若
、
为虚数,
,且
,求
和
的值;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63c2ec772c87c0ef5114013fb46ebe00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c329afed82867f9bcda2264c38d7d5e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2246f3a81afa524a0d2cd52a7659231d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c9448df33ed1b7fdaefe2b5b199caa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2021-10-13更新
|
184次组卷
|
2卷引用:上海市南洋模范中学2021-2022学年高二上学期初态考数学试题
3 . 已知
是虚数单位,复数
.
(1)若
为纯虚数,求实数
的值;
(2)若
在复平面上对应的点在直线
上,求复数
的模
以及
的共轭复数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93042bf237d43e2da62f2cd1853c18c1.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcfc6b5b7ae63a330f0cd8593ee47338.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de971553ea8a66d7849b138a4a0625c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
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解题方法
4 . (1)已知复数z满足(1+2i)
=4+3i.求复数z;
(2)在(1)的条件下,若复数(z+ai)2在复平面内对应的点在第一象限,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0c2f978b8ec6a7d1c8f17bfa81d1cd.png)
(2)在(1)的条件下,若复数(z+ai)2在复平面内对应的点在第一象限,求实数a的取值范围.
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2021-09-07更新
|
168次组卷
|
6卷引用:安徽省安庆市九一六学校2020-2021学年高二下学期4月月考文科数学试题
安徽省安庆市九一六学校2020-2021学年高二下学期4月月考文科数学试题广西蒙山县蒙山中学2019-2020学年高二下学期第一次月考数学(理)试题黑龙江省哈尔滨市双城区兆麟中学2019-2020学年高二下学期期末考试数学(理)试题福建省南平市浦城县2020-2021学年高一下学期第一次月考数学试题(已下线)第七章 7.2.2 复数的乘、除运算(作业)-【上好课】2020-2021学年高一数学同步备课系列(人教A版2019必修第二册)(已下线)第八章 立体几何初步(单元测试B卷)-2021-2022学年高一数学同步精品课件+课时作业(人教A版2019必修第二册)
解题方法
5 . 已设
是方程
的一个根,且
在复平面内对应的点在第一象限.
(1)求
;
(2)设
(其中为虚数单位,
),若
的共轭复数
满足
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4977c2bc9b8a0e52fba9f28f25cf7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07afea2d6683ef307d221d93ca7dcdcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa224ed9be8766a4d0b5138bd57de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2543268777eb18afe34a4994fbca6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/544418a36f6f424089c507829d2ba592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87b6c39e08356b37fe70b6e9ba179116.png)
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6 . 已知复数
满足
.
(Ⅰ)求
的共轭复数
;
(Ⅱ)若
,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ae115320088a0b182e6bb1a8ce7c777.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56bdac1656c2a95b154ca6337287300b.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a810f3c1473b5fafcf49914a6cb15d47.png)
您最近一年使用:0次
解题方法
7 . 已知
,
(其中
为虚数单位).
(1)若
为纯虚数,求实数
的值;
(2)若
(其中
是复数
的共轭复数),求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5a1c900662e43aeb6099d6f90b42929.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9543913522d0e9370e0e6e78839e7348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/579743813856e2a9183f5ec6eaaefbb2.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec04f844e8fd9d9b1ef835e23eaa54e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb5584121b20889524941dcc8efad3a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2543268777eb18afe34a4994fbca6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa224ed9be8766a4d0b5138bd57de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解题方法
8 . 若复数
的共轭复数
对应的点在第一象限;求实数m的集合.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfc78ae64ab5252ab0d204979fd1f48e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fcfebd9f5a57036e6df6b6e14865da3.png)
您最近一年使用:0次
2021-08-31更新
|
165次组卷
|
4卷引用:陕西省咸阳市武功县2020-2021学年高二下学期期中理科数学试题
9 . 把复数z的共轭复数记作
,已知
,求z
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf2739111a932f32709243c5d7d137ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c79ef5511be597f1866b2c2b21824ded.png)
您最近一年使用:0次
名校
解题方法
10 . 已知复数
,复数
,其中i是虚数单位,m,n为实数.
(1)若
﹐
为纯虚数,求
的值;
(2)若
,求m,n的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fef82607c00c82315dc83f4b59b7df9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8121876ce95bd57e4f45497a32ba1f39.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eee91910eed18c1db69a2ecbb3c0c22b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa72d9bed69759f1ab0331b4820e4b33.png)
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