解题方法
1 . 对于非空有限整数集X,
,定义
,对
现有两个非空有限整数集A,B,已知
且
.
(1)当
时求集合B;
(2)证明:
;
(3)当
且
时,任取
构造函数
问:当a,b取何值时,
的最小值最小?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f6b18b109a656b62fb173680ae99ca7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9451ce4fed053674ea20d5b455b783d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb70a272d3abd0bb156e332e75dc36b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43cd3b18a04c9a72a0bf7791bdf56a67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c9a194c0b9152e11aabc059c8483b93.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ba387b457949fde336790c9d05c4f1c.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15d281a85375fcf633d2cd86e294028.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eeee50bc500aad281fbb28d465db5b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4a0f5fcd7882200fa25b6ee5143f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c41c277675b413bbff28387082c9785.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbad171aea431ed7347bcdc7fbef54d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
名校
2 . 设集合
,满足下列性质的集合称为“翔集合”:集合至少含有两个元素,且集合内任意两个元素之差的绝对值大于2.则A的子集中有___________ 个“翔集合”.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c888363bcc23fb20f3a36ba34f0a7d7d.png)
您最近一年使用:0次
2021-09-16更新
|
1468次组卷
|
5卷引用:全国高中数学联赛模拟试题(十四)
全国高中数学联赛模拟试题(十四)浙江金华第一中学2022-2023学年高三下学期3月月考数学试题湖南省岳阳市2022-2023学年高一下学期期中数学试题(已下线)人教A版高一上学期【第一次月考卷】-【满分全攻略】(人教A版2019必修第一册)(已下线)新题型02 新高考新结构竞赛题型十五大考点汇总-1
名校
3 . 从集合
的子集中选出4个不同的子集,需同时满足以下两个条件:①
、U都要选出;②对选出的任意两个子集A和B,必有
或
.则选法有___________ 种.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5afb74291a8e01b3dcae940798df3fdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a837165ca03f9e4ea8964979c95e3bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f0f24d1daf9447a4837e7886261c592.png)
您最近一年使用:0次
名校
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95c9e547b17582b99e548037172eeff3.png)
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n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/95c9e547b17582b99e548037172eeff3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/677fd74842cbce34aed7073cebbd9c58.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n为偶数且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/831608f09609c37f757f5bfcd01253f4.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
2024-03-12更新
|
448次组卷
|
2卷引用:北京市第八中学2023-2024学年高三下学期3月月考数学试题
名校
5 . 对于集合
,定义
,设
.
(1)设
,
,求
,
;
(2)若
是S的子集且
,求满足条件的
的个数;
(3)设
是正整数,若对S的任意一个
元子集
,都有
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae176533a8607eb2ebc48bc767529e79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/516ca1c6590a671862a47f5bb2fd8fb4.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0705f5c8d67b4947455fc01be02b8a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08cbc3a23934d36bd7f24ea81e8dadc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/216c01a450f47b6ea550d8f54d4861d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a829cbbae2030c4e05d22cfadc31073.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be0c0989448ea6be3ddc96587ea03124.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab293d534f3615cc02a192fa3bd7f0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
名校
解题方法
6 . 已知集合
,且M中的元素个数n大于等于5.若集合M中存在四个不同的元素a,b,c,d,使得
,则称集合M是“关联的”,并称集合
是集合M的“关联子集”;若集合M不存在“关联子集”,则称集合M是“独立的”.
(1)分别判断集合
与
是“关联的”还是“独立的”?
(2)写出(1)中“关联的”集合的所有的“关联子集”;
(3)已知集合
是“关联的”,且任取集合
,总存在M的“关联子集”A,使得
.若
,求证:
,
,
,
,
是等差数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de70a9c335265f5e4b61a2f7989e2e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eeda5cef4846ef829069fe27f64e34e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd60406fc788b81ef67654138b352c7.png)
(1)分别判断集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c44f95dd4daea270501b7c0bc0ac34f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e4de7b549ffad65410afe7e655df0c9.png)
(2)写出(1)中“关联的”集合的所有的“关联子集”;
(3)已知集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d7e475e8d3a456ec527868697ea17d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/498f92bf2e605cdbc91973e29b047566.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4d89801d24aa43f47d6a366aad0571.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1ccce8225324817b0577551956464f.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/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
您最近一年使用:0次
2022-05-02更新
|
604次组卷
|
2卷引用:北京理工附中2021-2022学年高二下学期期中考试数学试题
名校
7 . 对于任何给定集合S,用
表示集合S的元素个数,用
表示集合S的子集个数.已知集合A,B,C满足下列两个条件:①
,②
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a4c1cc01a29960cd990ae81f1c80b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f49911a4a2a1eb5a4cc72185d111c15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65093c32706d98ddd3def30c4a95cc3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c64ab7605924a5a30f60c01658e253d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac0a63e011dbe44cc967f8585b0eceb.png)
您最近一年使用:0次
名校
8 . 设整数集合
,其中
,且对于任意
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d226dbccd278f6d20653d52c4fe28351.png)
(1)请写出一个满足条件的集合
;
(2)证明:任意
;
(3)若
,求满足条件的集合
的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9a02459a21167382ebfb095935255cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f947cf70804570839084fb9e8ffdad3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b836bde5106e78caeb728ff3353bee7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/269c7a915fc171ac7ad84c09883a6dd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d226dbccd278f6d20653d52c4fe28351.png)
(1)请写出一个满足条件的集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)证明:任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/484fc0329e7b476cd093d844d09fb20f.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d5215a6d2915d87bbc65302d184df8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
您最近一年使用:0次
2020-01-13更新
|
931次组卷
|
3卷引用:北京市西城区2019-2020学年高三上学期期末数学试题
9 . 设
且
,集合
的所有
个元素的子集记为
.
(1)求集合
中所有元素之和
;
(2)记
为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e819b87f90651d89fcd258c276294e43.png)
中最小元素与最大元素之和,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5818ede14d21f6df9ef9c2bfe09286c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f32124e425314792de0a78c4aab9dc0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44417455b9cc30693d09cbcfe4ed97c3.png)
(1)求集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44417455b9cc30693d09cbcfe4ed97c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a584b6ad5577ab3e2d22caf23e3c32b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e819b87f90651d89fcd258c276294e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/835e8c3900cb61bc8ddc313d5ce2253d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f0f2e18a330acee267e6f44319ef96.png)
您最近一年使用:0次
解题方法
10 . 已知集合
,
,
,若
,
,
或
,则称集合A具有“包容”性.
(1)判断集合
和集合
是否具有“包容”性;
(2)若集合
具有“包容”性,求
的值;
(3)若集合C具有“包容”性,且集合C的子集有64个,
,试确定集合C.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe38d1b1e18720a878bd7442c8f094de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e63c91626ffa91e590925e6f206c3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/957d41dbe52b49c3a7339e3519a3fe84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c46de01c5104b9112a688df37eadb000.png)
(1)判断集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bac46c6c52fc8b8e8f76084352e1893f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b3ed03b0f8fb8b88d7edf6165345c6f.png)
(2)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6acf45d9d64697db902fe8faa15394d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c925be255ca736a53b24d13ddede1a86.png)
(3)若集合C具有“包容”性,且集合C的子集有64个,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65f44d4f1341a7d80897a54a6778fae.png)
您最近一年使用:0次