1 . 定义两个
维向量
,
的数量积
,
,记
为
的第k个分量(
且
).如三维向量
,其中
的第2分量
.若由
维向量组成的集合A满足以下三个条件:①集合中含有n个n维向量作为元素;②集合中每个元素的所有分量取0或1;③集合中任意两个元素
,
,满足
(T为常数)且
.则称A为T的完美n维向量集.
(1)求2的完美3维向量集;
(2)判断是否存在完美4维向量集,并说明理由;
(3)若存在A为T的完美n维向量集,求证:A的所有元素的第k分量和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c3e014b5001732bc4b37be2b03c4033.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f00efefb7f52ad5c9dbdb180e577ee54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028076d0553b70f0fdae6beff69a10ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8c5d928c389d3abb01ca33fedf17efb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00da2c261a6ecd7533ffb8e153eaa506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4d9e604bcc449034230149a89d746a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53b4b3879d1c6debf0333008f686634e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea687406a05d37d0761cd1a3455c804f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ba4a7e65c27fb359ba7aadd49f797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d344174267f996c7cefecfd6985d380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75cbe607b41f76db6418ce01831a1d42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4d9e604bcc449034230149a89d746a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fdb50eea11f40d9f3c37052c45894a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57aabc9b21bc15ae35720679a7b6d1ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10772b376bc43eb5c33cfd7ba9771657.png)
(1)求2的完美3维向量集;
(2)判断是否存在完美4维向量集,并说明理由;
(3)若存在A为T的完美n维向量集,求证:A的所有元素的第k分量和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/912092af5b5301c659e6e86a7e858f38.png)
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2卷引用:2024届江西省九江市二模数学试题
2 . 已知点集
.设非空点集
,若对
中任意一点
,在
中存在一点
(
与
不重合),使得线段
上除了点
外没有
中的点,则
中的元素个数最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51b22251511d66ad0c49513dae61f2bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55fcd91711251a8bfe28b22c870dad80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1fb56e714978b3dd418996c1f75768c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
A.1 | B.2 | C.3 | D.4 |
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3 . 设正整数
,集合
,对于集合
中的任意元素
和
,及实数
,定义:当且仅当
时
;
;
.若
的子集
满足:当且仅当
时,
,则称
为
的完美子集.
(1)当
时,已知集合
,
.分别判断这两个集合是否为
的完美子集,并说明理由;
(2)当
时,已知集合
.若
不是
的完美子集,求
的值;
(3)已知集合
,其中
.若
对任意
都成立,判断
是否一定为
的完美子集.若是,请说明理由;若不是,请给出反例.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f9f20576d4bb73cc3c0d62b574e23eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7a2f4ee8d35d21bbef8edde88c6bd10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/759aff07fb4c591cdcb4dd7c2af6dd55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/279ec05658fd1933d7d0a8c56d1afca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4b7ca4667865ebe617fa6539e8d11fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fec1f2fef63966d161ebaf6bd40825e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b266fc4302ece42971e9f2545ffb1b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6a0812b120ad354e735cb3f11fa89f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2528fbb6a59ba983d1a70c81b0886484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bce88f9aba3036bf425a682829cdd441.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8406e10f6c518b911ad97501da658cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b72a181077702c7f5b744ca57db0af23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb5b01bbb185b5a804ce11df2a06cdab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)已知集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da3ea3c78cb3609e207a7ce2c3915ed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73c6eb534c175e2676ed45657c71df01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92247b24065617e962c85a52086261f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79059a3366ed1b339ba1317ce8a1e7f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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2卷引用:北京市东直门中学2024届高三上学期阶段检测(10月月考)数学试题
名校
4 . 设集合
为非空数集,定义
.
(1)若集合
,直接写出集合
及
;
(2)若集合
且
,求证
;
(3)若集合
且
,求
中元素个数的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e32ae0e537ab483485e3dc6628b2f3a.png)
(1)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/265e81e52218232e16c78f57b3aa0de9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b26ea9b3e6e286874c5dca1badea723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e16289945d1d1c529fb1bfd4d828f413.png)
(2)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77239c98c78a026cc03336edca067ea3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc9473a5974fa9c4286f90f6a3637411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb1868c8a0db983c9cc2695294fa03b1.png)
(3)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce46889ee6889ca41c5bd19eaf0e242f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4d331fa6921e8ebc0b1fc4affd22ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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5 . 已知数列
满足:
,对于任意实数
,集合
的元素个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/359ced5cca6a8afeeaa4cad1ac7046e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec9e090c72c8a1d9bbcfa7d725ad096a.png)
A.![]() | B.非零有限个 |
C.无穷多个 | D.不确定,与![]() |
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3卷引用:上海市曹杨第二中学2022-2023学年高一下学期期末数学试题
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6 . 已知集合
,x、![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e13d30ce87fcb597b41622df51a23933.png)
,其中
.定义
,若
,则称x与y正交.
(1)若
,写出
中与x正交的所有元素;
(2)令
,若
,证明:
为偶数;
(3)若
,且A中任意两个元素均正交,分别求出
,14时,A中最多可以有多少个元素.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3511b90f652295c5c556f8630ae5985d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e13d30ce87fcb597b41622df51a23933.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cedc27999f4df768614e022b33b414d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40b02267ebc7ed6cde9d46408c7279f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5971b046d8c65732389573ad0808c42c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4157967918cabbed7f5d82a291cc262f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80721f50d5063cb9f835ea6fc6870285.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e47cd514b2920609e3781c87df6ab70.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a6fc4d929a83295d890ac7c0c09d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22111b1f07e7873e5a156d1937eaac27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd1f0ace9ca0b79929e73af6c201c2e.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d671185c2cc9c5d88029e04f4b2ccf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ec5d76db9bd05547932966c9913dc2.png)
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2023-02-03更新
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5卷引用:上海市实验学校2022-2023学年高一上学期期末数学试题
上海市实验学校2022-2023学年高一上学期期末数学试题(已下线)难关必刷01集合的综合问题(3种题型30题专项训练)-【满分全攻略】(沪教版2020必修第一册)北京市广渠门中学2023-2024学年高二上学期10月月考数学试题(已下线)高一上学期期末复习【第一章 集合与常用逻辑用语】拔尖-举一反三系列(已下线)高一上学期期末考试解答题压轴题50题专练-举一反三系列
名校
7 . 设集合S,T都至少含有两个元素,且S,T同时满足:条件1:对任意
,若
,则
;条件2:对任意
,若
,则
.给出下列说法:
①若S只有2个元素,则这2个元素互为相反数;
②若S只有2个元素,则
必有3个元素;
③若S只有2个元素,则
可能有4个元素;
④存在含有3个元素的集合S,满足
有4个元素.
其中所有正确说法的序号是______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c36aecba41f6f5ff0d46a29dccaaf01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a11a069688e4c797fcf527eab15afa82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d015f20727d06fcd4fde4ed4de4e7c56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/566d386cbedb1c8750f4837633c2af64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a11a069688e4c797fcf527eab15afa82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e0f9ba8419972cff845bfd91f64297.png)
①若S只有2个元素,则这2个元素互为相反数;
②若S只有2个元素,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e8092e0dec3a194a5f7f0dc6f00f23.png)
③若S只有2个元素,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e8092e0dec3a194a5f7f0dc6f00f23.png)
④存在含有3个元素的集合S,满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e8092e0dec3a194a5f7f0dc6f00f23.png)
其中所有正确说法的序号是
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8 . 设集合
中至少有两个元素,且S,T满足:
①对于任意
,若
,都有
;
②对于任意
,若
,则
.
(1)分别对
和
,求出对应的
;
(2)如果当S中恰有三个元素时,
中恰有4个元素,证明:S中最小的元素是1;
(3)如果S恰有4个元素,求
的元素个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61fa126ff595fe6c0b42a31148d6fd65.png)
①对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c36aecba41f6f5ff0d46a29dccaaf01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a11a069688e4c797fcf527eab15afa82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8339eab9c659e50db86828b65f825e22.png)
②对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/566d386cbedb1c8750f4837633c2af64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a5abe56c019ac914e1fcde1865a747.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5718e9c8baa106b447f9fae23e730de.png)
(1)分别对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1014d847a76d84feaa69d22f6c27e98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a47661e8894db3bc283922eaf4bfa711.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af500a4e28d6f5b38390b7642eb96ed5.png)
(2)如果当S中恰有三个元素时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af500a4e28d6f5b38390b7642eb96ed5.png)
(3)如果S恰有4个元素,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af500a4e28d6f5b38390b7642eb96ed5.png)
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2022-11-07更新
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3卷引用:北京师范大学第二附属中学2023解高三上学期期中考试数学试题
名校
解题方法
9 . 对于正整数集合
,如果去掉其中任意一个元素
之后,剩余的所有元素组成的集合都能分为两个交集为空集的集合,且这两个集合的所有元素之和相等,就称集合
为“可分集”,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2be9dcd867996d7db00fb850227a871d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efee470d0232b6b37f2fb2ab15aae0ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
A.![]() |
B.集合![]() |
C.若集合![]() ![]() |
D.若集合![]() ![]() |
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4卷引用:重庆市西南大学附属中学校2022-2023学年高一上学期第一次阶段性考试数学试题
重庆市西南大学附属中学校2022-2023学年高一上学期第一次阶段性考试数学试题湖北省襄阳市第四中学2023-2024学年高一上学期9月月考数学试题(已下线)第一章 集合与常用逻辑用语(压轴题专练)-速记·巧练(人教A版2019必修第一册)(已下线)高一上学期期末考试选择题压轴题50题专练-举一反三系列
名校
10 . 已知集合
为非空数集,
,
.
(1)若集合
,直接写出集合
及
;
(2)若集合
,
,且
,求证:
;
(3)若集合
,且
,求集合A中元素的个数的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbb8cfc6508960e8d9df86e4fb1c1481.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d0b31a3a2f0e3d81036338bc74c0bd6.png)
(1)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/265e81e52218232e16c78f57b3aa0de9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b26ea9b3e6e286874c5dca1badea723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e16289945d1d1c529fb1bfd4d828f413.png)
(2)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7591668ec1bc5e8b1f2c4dba4835d1b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3604274ad6707a906eba371a9e884144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc9473a5974fa9c4286f90f6a3637411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb1868c8a0db983c9cc2695294fa03b1.png)
(3)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9225d8d0500a80b6da822005d6bb68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4d331fa6921e8ebc0b1fc4affd22ba.png)
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