解题方法
1 . 已知集合
,若
,则实数
的值可以是________ .(写出一个满足条件的值即可)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b91660ec08789bb27e383ed92b6caa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ceb1f338fa60976229d7ec6531b626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2023高一·全国·专题练习
2 . (1)已知集合
且
,任意从中取出k个四元子集
,均满足
的元素个数不超过2个,求k的最大值.(举出一个例子即可,无需证明)
(2)已知集合
且
,任意从中取出k个三元子集
,均满足
的元素个数不超过一个,求k的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74cbafbbc7f78431a6f041f87844178c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43e4a73e0269c6b90c9c620a27119db5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc9d48660f696fc51b97c89fa55d6f4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/738aa208e410305523fa64b8518ba6b2.png)
(2)已知集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f04bf835c1c32d9e61922191da7848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43e4a73e0269c6b90c9c620a27119db5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc9d48660f696fc51b97c89fa55d6f4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/738aa208e410305523fa64b8518ba6b2.png)
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3 . 已知集合
,
.设集合A同时满足下列三个条件:
①
;②若
,则
;③若
,则
.
(1)当
时,一个满足条件的集合A是__________ ;(写出一个即可)
(2)当
时,满足条件的集合A的个数为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7101a3eee1a6054a94a13c1285713bf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45020afb5156159ad42add5537797ee7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827e0933211772799f65eccd2fbce592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cde2827722685b8a71f9aae2dc4d7484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fc1108d22143e834bd69eeb9fd8775a.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac3649308b528fd56545ba102dc42d5.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe08722cf9300fe188dbbb71989c06c9.png)
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4 . 对集合
,定义![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca578919b59d25a1bb2b5ea8e33da46.png)
①若
的元素个数为4,则
可以为:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f9fabbbe61a759e52ec975215e2e7c.png)
________ (写出一组即可)
②若集合
满足:存在
的子集
,使得
的元素个数不小于100,且对任意
,均有
,则集合
的元素个数的最小值是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca578919b59d25a1bb2b5ea8e33da46.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81e37e656d05244fe3a5769cd1446725.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f9fabbbe61a759e52ec975215e2e7c.png)
②若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81e37e656d05244fe3a5769cd1446725.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57a5235dcfd51f1ba4c1ee0037e167c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dfa843f0c5458e8b9ad3244680f7679.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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解题方法
5 . 已知集合
,若
,则符合题意的一个集合C为______ (写出符合题意的一个集合即可,不必写出所有集合);集合
,
,若
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb174d27e68b593740d866a33a43ecd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22882310035db6d3d953e060b0c91733.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02982c0f35420577c5d4cbd7a0e9f6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80d973f235340b2d8f3c1e5ac622d016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a7c6e6ef5e8db9a290278a9d951d7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45e680f87850128c8d390bfad6694797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
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6 . 已知非空集合
,若对任意
(
可以相同),
与
中至少有一个属于集合
,则称
为“好集合”.
(1)写出所有的元素均小于3的“好集合”;(写出结论即可)
(2)求出所有元素个数为4的“好集合”,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034073053761f3dda1349ecfb6a4d9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c36aecba41f6f5ff0d46a29dccaaf01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a25d8f9593923203536dc9264f7060.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
(1)写出所有的元素均小于3的“好集合”;(写出结论即可)
(2)求出所有元素个数为4的“好集合”,并说明理由.
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解题方法
7 . 若集合
满足
,则集合![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9163ebe812708ee5337d62298c2e3363.png)
______ .(写出一个集合
即可)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d610d9b67a46d8197267506cdff61528.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9163ebe812708ee5337d62298c2e3363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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2022-11-08更新
|
229次组卷
|
2卷引用:北京市第一零九中学2023-2024学年高一上学期期中考试数学试题
8 . 对于非负整数集合S(非空),若对任意
,
,都有
,或者
,则称S为一个好集合,以下记
为S的元素个数.
(1)写出两个所有的元素均小于3的好集合;(给出结论即可)
(2)设集合
,
,若集合S为好集合,求出a,b,c,d所满足的条件;(需说明理由)
(3)若好集合S满足
,求证:S中存在元素m,使得S中所有元素均为m的整数倍
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45c8b2714e2f6ddfdd6b05d3b4de1149.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b8e5872f45d4b878b0119997cb5bae2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84734fbba70c0b45045fabf8090f810b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/911cdb689ca80557ce076cb49b3ee498.png)
(1)写出两个所有的元素均小于3的好集合;(给出结论即可)
(2)设集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8518dab1e2a5525a4311a8cca1700cb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/951836ef5e4cfd3689a94810e0f8d43d.png)
(3)若好集合S满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8893fe5f594a2bd8f8f89eb752c18c40.png)
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2021-09-08更新
|
493次组卷
|
5卷引用: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)
(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)上海市张堰中学2020-2021学年高一上学期10月月考数学试题(已下线)专题02 集合与常用逻辑用语常考压轴题型-2021-2022学年高一《新题速递·数学》(人教A版2019)(已下线)1.1 集合的运算(第4课时)第一章 集合与逻辑(B卷·提升能力)
9 . 集合的表示方法有______________________ (写出其中两种即可).
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10 . 若一数集的任一元素的倒数仍在该集合中,则称该数集为可倒数集,则集合![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eddd6ab4ab3d173ed37f26d46c97536e.png)
________ (填“是”或“不是”)可倒数集,试写出一个含三个元素的可倒数集________ .(答案不唯一)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eddd6ab4ab3d173ed37f26d46c97536e.png)
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