名校
解题方法
1 . 已知全集为R,对于给定数集A,定义函数
为集合A的特征函数,若函数
是数集A的特征函数,函数
是数集B的特征函数,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ef299b559eb12ac8b45b8dc056fb69a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
A.![]() ![]() |
B.![]() ![]() |
C.![]() ![]() |
D.![]() ![]() |
您最近一年使用:0次
2024-02-23更新
|
316次组卷
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2卷引用:湖南省株洲市第二中学2021-2022学年高一上学期第三次月考数学试卷
名校
2 . 对于集合
,定义函数
.对于两个集合
,定义集合
.已知集合
.
(1)求
与
的值;
(2)用列举法写出集合
;
(3)用
表示有限集合
所包含元素的个数.已知集合
是正整数集的子集,求
的最小值,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2599ffc8c40e388d718a3c743a513d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc1230fe52b22fe2047caf0ff1fad9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76693f0b722f0adbb55b35a64703256b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f03e23c5f50122bd65c621c69f301f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edf3030d12212582bfe4c35826833fd0.png)
(2)用列举法写出集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81e37e656d05244fe3a5769cd1446725.png)
(3)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10a58429b36d406ab944c4b1b04a2fe4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/884a76f27d8958f920bbe4dd7be24e5b.png)
您最近一年使用:0次
名校
3 . 设集合M是实数集
的子集,如果
满足:对任意
,都存在
,使得
,则称t为集合M的聚点,则在下列集合中,以0为聚点的集合有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf039c46a25e331446c6ee1e9af3c82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acfc595518cf752e1c7903dfff93dbda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cf951919b39035bcf7f59fc513b549.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2023-09-25更新
|
269次组卷
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7卷引用:重庆市第一中学2021-2022学年高一上学期10月月考数学试题
重庆市第一中学2021-2022学年高一上学期10月月考数学试题四川省内江市资中县第二中学2022-2023学年高一上学期10月月考数学试题江苏省南京市中华中学2023-2024学年高一上学期学情调研(一)数学试题江苏省连云港市海滨中学2023-2024学年高一上学期第一次月考数学试题(已下线)单元高难问题01集合中的新定义问题-【倍速学习法】(人教A版2019必修第一册)重庆市2024届高三上学期11月月度质量检测数学试题(已下线)专题01 集合及其运算2-【寒假自学课】(苏教版2019)
名校
解题方法
4 . 设A是正整数集的一个非空子集,如果对于任意
,都有
或
,则称A为自邻集.记集合
的所有子集中的自邻集的个数为
.
(1)直接写出
的所有自邻集;
(2)若
为偶数且
,求证:
的所有含5个元素的子集中,自邻集的个数是偶数;
(3)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/417abc71b8bee465746db0a35e776f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ca2371b88985463ba25e4ec1ea453d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b377240e8ad277805e0499803d5be5e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(1)直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e47cd514b2920609e3781c87df6ab70.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/623eef12f37f0b85ddd367faa9b3bfad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5818ede14d21f6df9ef9c2bfe09286c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04aba3402e1d191ff96adda7c4af70ef.png)
您最近一年使用:0次
2023-05-28更新
|
707次组卷
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11卷引用:北京市西城区2021届高三5月二模数学试题
北京市西城区2021届高三5月二模数学试题北京市第五十七中学2021-2022学年高二上学期期中检测数学试题北京市第二十中学2022-2023学年高二上学期12月月考数学试题北京一零一中学2023届高三下学期数学统练四试题北京卷专题02集合(解答题)北京市第一0一中学2022-2023学年高三下学期统练数学试卷(四)(已下线)高一上学期第一次月考解答题压轴题50题专练-举一反三系列北京市北京师范大学第二附属中学2023-2024学年高二上学期期中测试数学试题北京市东城区景山学校2024届高三上学期12月月考数学试题北京市第二中学2023-2024学年高二上学期12月第二学段考试数学试卷(已下线)专题22 新高考新题型第19题新定义压轴解答题归纳(9大核心考点)(讲义)
5 . 已知数列
:1,
,
,3,3,3,
,
,
,
,
,
,即当
(
)时,
,记
(
).
(1)求
的值;
(2)求当
(
),试用
、
的代数式表示
(
);
(3)对于
,定义集合
是
的整数倍,
,且
,求集合
中元素的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37e5531913e2f170465d8df01795cd51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/123374c62330ca2583f96688e9c27005.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a20fadc7f410eb813783eb020917bd1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf5776ec7059c208daf01ca48a34915.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86a9f96597f4006f719b1a14960a8de7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0ca3befd6622638091e99d273129d0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f422edb72f7e1d5529a5570feb77df.png)
(2)求当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6253e1e64cc4b92de299d498fe5e2f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad52924df9291d5d191d18e09374ee1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
(3)对于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d717b62cf19a284dacacfb596fc1d9dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61956a89366cc668a96692ad35b29b75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9852fbf13513943d251134cde29c3465.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/391d23b5ffaf0444a1d1a1550a0f3527.png)
您最近一年使用:0次
2023-01-29更新
|
697次组卷
|
5卷引用:上海市华东师范大学第二附属中学2021届高三下学期5月高考模拟数学试题
(已下线)上海市华东师范大学第二附属中学2021届高三下学期5月高考模拟数学试题上海市南洋模范中学2023-2024学年高二上学期开学考数学试题上海民办南模中学2023-2024学年高二上学期9月月考数学试题(已下线)专题22 新高考新题型第19题新定义压轴解答题归纳(9大核心考点)(讲义)(已下线)微考点4-1 新高考新试卷结构压轴题新定义数列试题分类汇编
名校
6 . 设集合
,若集合S中的元素同时满足以下条件:
①
,
恰好都含有3个元素;
②
,
,
为单元素集合;
③![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f5e5858ed377ffaf700c868a38e7256.png)
则称集合S为“优选集”.
(1)判断集合
,
是否为“优选集”;
(2)证明:若集合S为“优选集”,则
,
至多属于S中的三个集合;
(3)若集合S为“优选集”,求集合S的元素个数的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c32fe32077f54b51282141c6f6217071.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/296902bfc14bde752a4503d57351988a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e819b87f90651d89fcd258c276294e43.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866fcccdcf1d7bf2f73d4323b4c1c1e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b71af6590f0f369c164a054a8b63bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d41e1766af890659ac91f4ed407f5a0f.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f5e5858ed377ffaf700c868a38e7256.png)
则称集合S为“优选集”.
(1)判断集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d7d06d943bfb67f20183899803ef150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a839a1d941f18f084505c7e8614c984b.png)
(2)证明:若集合S为“优选集”,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7060f36f24efe532ddd3f12084f36d83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)若集合S为“优选集”,求集合S的元素个数的最大值.
您最近一年使用:0次
2023-01-19更新
|
566次组卷
|
4卷引用:北京交通大学附属中学2021-2022学年高一上学期期中数学试题
北京交通大学附属中学2021-2022学年高一上学期期中数学试题重庆市南开中学校2023-2024学年高一上学期九月测试数学试题河南省周口市周口恒大中学2023-2024学年高一上学期9月月考数学试题(已下线)难关必刷01集合的综合问题(3种题型40题专项训练)-【满分全攻略】(人教A版2019必修第一册)
名校
7 . 已知集合![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99dd46e001c117104353b2e41867994e.png)
,
,
,对任意
,定义
.若存在正整数
,使得对任意![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ff430dfb9275eed8c6e0cbe671a2798.png)
,都有
,则称集合
具有性质
.如集合
、
都具有性质
.记
是集合
中的最大值.
(1)判断集合
和集合
是否具有性质
(直接写出结论);
(2)若集合
具有性质
,求证:
和
;
(3)若集合
具有性质
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99dd46e001c117104353b2e41867994e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14ef42f964d02549eec898b0d3f0588e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20e326e8f60f19e64e32c584ccfc40c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a703c80c9a9624b08ada02523257b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ff430dfb9275eed8c6e0cbe671a2798.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66ff43ffdcc8b03787a1faa6509d79c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ff430dfb9275eed8c6e0cbe671a2798.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db67bc808e5b3a6ba3f7691a50d20957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20362ac95ee78ef94caeb0579bb40bfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1baf30f84a1797c8e345c624e6cab1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36cd2052417ccb1650cc533f62273aab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e10cda3e056f1db8777f3c322165bb05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/287adcb739a4890d108dd974358345fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87b87cd94fef6e528d0913bb1b7b53de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1be13762bee8c87a904b93379c76ac8b.png)
(1)判断集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb6d9e9e68d8fa416188fe9c5efafae0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2309c5526d918b1e6d456a999ab88c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/287adcb739a4890d108dd974358345fa.png)
(2)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57e296d9adecd44ddd36ec145dcf9dc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67f80a1f6a8c236559e2fa55feb9ee1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923eed4cf08e8bef3e7a61ce3ba48d62.png)
(3)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f3b97c217370c2b3d22e6738006cc2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5d5ade4406641db15a62630f06e4201.png)
您最近一年使用:0次
2022-12-26更新
|
422次组卷
|
4卷引用:上海市曹杨第二中学2021-2022学年高一上学期期中数学试题
上海市曹杨第二中学2021-2022学年高一上学期期中数学试题(已下线)第1章 集合与逻辑 单元测试(单元重点)--高一数学同步精品课堂(沪教版2020必修第一册)上海师范大学附属中学闵行分校2023-2024学年高一上学期期中数学试题广西名校2024届高三高考模拟猜题试卷
8 . 已知集合
,
、
、
满足:①
;②每个集合都恰有5个元素.集合
中最大元素与最小元素之和称为
的特征数,记为
,则
的值不可能为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c1410c1895cfdff9c25481f1f3b2dba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d343d79a12548d8e4f5b1dd6dd9bf2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55cec51e3269da8850f98121dc10d31d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e819b87f90651d89fcd258c276294e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efd0eef0ef2ba8d61bca3b917d3aeb91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eced34833fc5ee8ad2c6817ced270988.png)
A.37 | B.39 | C.48 | D.57 |
您最近一年使用:0次
2022-12-26更新
|
959次组卷
|
7卷引用:上海市曹杨第二中学2021-2022学年高一上学期期中数学试题
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名校
9 . 已知集合
(
,
,
)具有性质
:对任意
(
),
与
至少一个属于
.
(1)分别判断集合
,与
是否具有性质
,并说明理由;
(2)
具有性质
,当
时,求集合
;
(3)①求证:
;②求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3a3f24673b6e954db3a8b229d8c4564.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b716ca98b7c6adfe97ab44d7efbf7806.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c639c7e5f1e7e7ee5d5ee2f30b155bb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18db8b768e5060b3471415e4b55ac30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/059a6c5a965c335b8da05e697da2c7c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13ee542834ccbb57fcc55b1680ca9db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(1)分别判断集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5b42882dd156f60b1bbcc394155ee88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d9bf9b7e8523d5cdca10de9ae70770e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d020cd453031ae9eede7961ec78f21a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d8e8f821111de8075e5c3dfb22a5d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(3)①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2faf3937abcb6a59071c17bc6bb10f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f2d0c59eb82944a74f43aa27e8af608.png)
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4卷引用:上海市奉贤中学2021-2022学年高一上学期10月月考数学试题
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10 . 对于函数
,若
,则称x为
的“不动点”,若
,则称x为
的“稳定点”,记
,
,则下列说法错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e44284cb19805a584880a686ac3df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/801d492de7ae12be2bf576f25c4f1ceb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30bf91f31613ce80bba22a49862db03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73339743a70345917d3a3e648b30525c.png)
A.对于函数![]() ![]() |
B.若![]() |
C.对于函数![]() ![]() |
D.对于函数![]() ![]() ![]() |
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