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1 . 已知复数
,
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa224ed9be8766a4d0b5138bd57de0f0.png)
A.若![]() ![]() |
B.若![]() ![]() ![]() |
C.若![]() ![]() |
D.![]() |
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2023-07-04更新
|
585次组卷
|
2卷引用:重庆市西南大学附属中学校2022-2023学年高一下学期期末数学试题
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2 . 已知向量
,
,
,
与
夹角为90°.
(1)若
,求k的值;
(2)设复数
且复数
满足
.在
最大时,求此时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81f4dcf415977dea53f52a85b6b82136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c3fba9d1aba797816245c525cb3540c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddf398307e8d9705492d79633e4c28c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae06ee69e928cfc1ee9e512b0b3dfad2.png)
(2)设复数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e637068825a2b0fd653e3e8d2c33e30b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/138e8d88f7ca53fd4c0b7ffd6f98a969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de971553ea8a66d7849b138a4a0625c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ea3cc01ce7266cdf0fd73fd50d23c8.png)
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解题方法
3 . 设复数
,
满足
,
,则
( )
![](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/77138483e183730dc3d94cdf96370f84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61e809123f4c66a5614825054777715f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2a1c2ddd315c49105d3c84a061a2d74.png)
A.1 | B.![]() |
C.![]() | D.![]() |
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2023-06-13更新
|
755次组卷
|
3卷引用:重庆市杨家坪中学2022-2023学年高一下学期5月月考数学试题
重庆市杨家坪中学2022-2023学年高一下学期5月月考数学试题湖北省武汉市华中师范大学第一附属中学2022-2023学年高一下学期学业水平质量评价检测数学试题(已下线)10.2 复数的运算-【帮课堂】(人教B版2019必修第四册)
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4 . 已知复数
,其中z为虚数,则下列结论中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/361ab65203c5e25dee7be10494c06194.png)
A.当![]() ![]() ![]() | B.当![]() ![]() |
C.当![]() ![]() | D.当![]() ![]() |
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2023高一·江苏·专题练习
解题方法
5 . 如果复数z满足
,那么
的最大值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69cc1bc3de333a4446db05eb3033616e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba881ffa71aa6fb0460299b5492a11c9.png)
A.![]() | B.1 | C.2 | D.![]() |
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6 . 定义复数的大小关系:已知复数
,
,
,
,
,
.若
或(
且
),称
.若
且
,称
.共余情形均为
.复数u,v,w分别满足:
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7769a9ed79bc3d423437e1ed98b033af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/935a9ada9a7372c5d296243c435a3c73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b715e7842b95f654f16056a7c7f2abe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad81dbee4a54bf41f7e94c427ff32c97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ade3a1d01605706801e238726e55fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b2fb1017d5dfe3a300de3e14a71b6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b6784d29f0dc8ec1e4fa0bde2ddee61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a7977d7239c13e044382d3bdc9ab015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b2fb1017d5dfe3a300de3e14a71b6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b115aa9eb665405381be36b7fc0538d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9de59a6da1ee210ccf04651ae53275dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764e20605ecbec7676b8394c780b2afa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0281ae657be479d70e85962f835e7d05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f64ad83b3618527758dac350b12a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a192a37227aec9ca48b5d879592713c2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
7 . 已知复数
,其中a,
,i为虚数单位,
为z的共轭复数,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b40b6895776e0807c2baecbc8f33a8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d285a4c557fc9748105b62ccd94b7859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d41042207515dd2e8349c805e6aee400.png)
A.若![]() ![]() |
B.![]() |
C.![]() |
D.若![]() ![]() |
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2023-05-18更新
|
672次组卷
|
2卷引用:重庆市巴蜀中学校2023届高三下学期适应性月考(九)数学试题
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解题方法
8 . “虚数”这个词是17世纪著名数学家、哲学家笛卡尔创造的,当时的观念认为这是不存在的数.人们发现即使用全部的有理数和无理数,也不能解决代数方程的求解问题,像
这样最简单的二次方程,在实数范围内没有解.引进虚数概念后,代数方程的求解问题才得以解决.设
是方程
的根,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f92c4303ebef88f0862f8d625cd5356b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8646eaa05bfde39d27813c301a076420.png)
A.![]() |
B.![]() |
C.![]() |
D.若![]() ![]() ![]() ![]() |
您最近一年使用:0次
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9 . 设复数
(
为虚数单位),则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60f543c26ef2de07fb132ba386a8b498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
A.“![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() ![]() |
D.方程![]() |
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10 . 设
,
为复数,则下列结论中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa224ed9be8766a4d0b5138bd57de0f0.png)
A.若![]() ![]() | B.若![]() ![]() ![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2023-04-14更新
|
878次组卷
|
6卷引用:重庆市第八中学校2022-2023学年高一下学期期中数学试题
重庆市第八中学校2022-2023学年高一下学期期中数学试题广东省广州市真光中学2022-2023学年高一下学期5月阶段质量检测数学试题(已下线)专题3 复数(2)(已下线)专题2 复数(2)(已下线)专题4 复数(2)(已下线)模块一 专题4 复数 1 (苏教版)