1 . 已知
,则
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5e7d952a3e4538803ad8e142a16104.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb4c2f5f1e059ae05d2a070c6143df20.png)
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2 . 约数,又称因数.它的定义如下:若整数a除以整数m(
)除得的商正好是整数而没有余数,我们就称a为m的倍数,称m为a的约数.
设正整数a有k个正约数,即为
,
,⋯
,
,(
).
(1)当
时,是否存在
,
,…,
构成等比数列,若存在请写出一个满足条件的正整数a的值,若不存在请说明理由;
(2)当
时,若
,
,⋯
构成等比数列,求正整数a.
(3)当
时,若
,
,…,
是a的所有正约数的一个排列,那么
,
,
,⋯,
是否是另一个正整数的所有正约数的一个排列?并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0baedc4d7e690ab3f7d80d30ba0a9efe.png)
设正整数a有k个正约数,即为
![](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/68c0cd13ec90e5697013e59d73d3e82c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f255d0395fba51ca2d44293cca42e0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df21efb81bd9f5ec47c8ad705a2272ad.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/835c74bbb8c61dd2d2f008664a8c8810.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/5f255d0395fba51ca2d44293cca42e0a.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbeaed9ec21e090defafcfeefe0059c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe164d8a8a4049e01565b576007651de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01416ee1d48b17f889e444b7eda99740.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177e4374fb738c4f13dc58e9025c88e4.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/835c74bbb8c61dd2d2f008664a8c8810.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/5f255d0395fba51ca2d44293cca42e0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e6f19b84484b5480ea2100165abfd81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f9d2e152db0845ff23e4ea0cd00974d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15f30fd21924e7bcf368854ef38af82e.png)
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23-24高一下·全国·课堂例题
3 . 某场知识竞赛比赛中,甲、乙、丙三个家庭同时回答一道有关环保知识的问题.已知甲家庭回答正确这道题的概率是
,甲、丙两个家庭都回答错误的概率是
,乙、丙两个家庭都回答正确的概率是
,若各家庭回答是否正确互不影响.
(1)求乙、丙两个家庭各自回答正确这道题的概率;
(2)求甲、乙、丙三个家庭中不少于2个家庭回答正确这道题的概率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2a698891d42c70b597f0da4f215f09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d7abf02717d6e59d8a64a65a87c412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
(1)求乙、丙两个家庭各自回答正确这道题的概率;
(2)求甲、乙、丙三个家庭中不少于2个家庭回答正确这道题的概率.
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4 . 一般地,任何一个复数
都可以表示成
的形式,其中,_____ 是复数的模;
是以
轴的非负半轴为始边,向量
所在射线(射线
)为终边的角,叫做复数
的_____ ,
叫复数的三角表示式,简称三角形式.为了与三角形式分开来,
叫做复数的代数表示式,简称代数形式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60f543c26ef2de07fb132ba386a8b498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd6b88af810dbab3e7a0e9baeafb15f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeb0e25bbccbee4a1b9db38b49e87978.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f54d290009e138d1f0d4cb771cada9f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b40b6895776e0807c2baecbc8f33a8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd6b88af810dbab3e7a0e9baeafb15f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b40b6895776e0807c2baecbc8f33a8c.png)
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5 . 若一个两位正整数
的个位数为4,则称
为“好数”,若
,且
,
为正整数,则称数对
为“友好数对”,规定:
,例如
,称数对
为“友好数对”,
,则小于70的“好数”中,所有“友好数对”的
的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d13a6e30a21289e94fc277cf8837689.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/698c4d4e50062b4a7dd70fe1b4ab4fd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9ac064230ab6367a96d893d90e2eb05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5c6dff41808d7155650360fd48aa667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a70feb95addc50c555e2eb6ad82521ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d75f0e4f8c5195728e3e7675586a8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9317cb763ff70bd19b2950e7f3f74399.png)
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2024-04-05更新
|
456次组卷
|
2卷引用:河北省部分示范性高中2024届高三下学期一模数学试题
解题方法
6 . 过抛物线
上一点
作两条相互垂直的直线,与E的另外两个交点分别为A,B,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0782718dd8b2e591ef21fc89d1af2fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0fe3f68cbbcc907caab5083d08df301.png)
A.E的准线方程为![]() |
B.过点M与E相切的直线方程为![]() |
C.直线AB过定点![]() |
D.![]() ![]() |
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7 . 如图,将
个整数放入
的宫格中,使得任意一行及任意一列的乘积为2或-2,记将
个整数放入
的宫格有
种放法,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9bbe98100c8067ff36ac536d043a85.png)
______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2765e74b2306cee47bb6b641fdb9845c.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ceef1abeeef220b4fe5f7d96feedd90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/767f5a4746f04db68386fac3970b1ed1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ceef1abeeef220b4fe5f7d96feedd90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/767f5a4746f04db68386fac3970b1ed1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9bbe98100c8067ff36ac536d043a85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2765e74b2306cee47bb6b641fdb9845c.png)
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21-22高一·全国·课后作业
8 . 化下列复数为三角形式.
(1)
;
(2)
;
(3)2i;
(4)-1.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26233f9c8b116eb22ee219b091ad751b.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d19ed90fa07e523db60031ab8d53e171.png)
(3)2i;
(4)-1.
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2024-04-21更新
|
40次组卷
|
5卷引用:7.3 复数的三角表示(精练)-2021-2022学年高一数学一隅三反系列(人教A版2019必修第二册)
(已下线)7.3 复数的三角表示(精练)-2021-2022学年高一数学一隅三反系列(人教A版2019必修第二册)(已下线)专题7.5 复数的三角表示(重难点题型精讲)-2022-2023学年高一数学举一反三系列(人教A版2019必修第二册)(已下线)专题03 复数的三角表示-(题型专练)-《知识解读·题型专练》(人教A版2019必修第二册)(已下线)7.3复数的三角表示——课后作业(基础版)(已下线)10.3 复数的三角形式及其运算-【帮课堂】(人教B版2019必修第四册)
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9 . 若
,则称
是关于x,y的方程
的整数解.关于该方程,下列判断错误 的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a40c81308e49d61ac1e98b9ba48a6ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23b4f86e48e2b0d63c1865c60ed1e4d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc7a85679aac8db77ae690199c1dad7c.png)
A.![]() ![]() |
B.![]() ![]() |
C.![]() ![]() |
D.![]() ![]() |
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10 . 根据
乘任意复数z的几何意义计算:
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1f0fbf723ab1cde6a1aa13b14148c8c.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b13fac620a449fb310055d626e6079f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987f17a00d62c13edd9f24a6bc9acf2c.png)
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