1 . 已知集合
中的元素都是正整数,且
.若对任意
,且
,都有
成立,则称集合A具有性质
.
(1)判断集合
是否具有性质
;
(2)已知集合A具有性质
,求证:
;
(3)证明:
是无理数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ea7fcdb5423c1c8c032a3efcf245682.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c3301017a56b4427b6fab492f63b86d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e13a814f8e081078dcf3788177affcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a11a069688e4c797fcf527eab15afa82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d13266f62539701a58bbcf895de46b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(1)判断集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ab146eb4208985dfe60ae3b41ba2bdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)已知集合A具有性质
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30ff2bdedce1d88ef6f2607f0a05c1cd.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
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2 . 给定正整数
,设集合
.对于集合M的子集A,若任取A中两个不同元素
,
,有
,且
,
,…,
中有且只有一个为2,则称A具有性质P.
(1)当
时,判断
是否具有性质P;(结论无需证明)
(2)当
时,写出一个具有性质P的集合A;
(3)当
时,求证:若A中的元素个数为4,则A不具有性质P.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c972cbd63decec197aec1bdc306de67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2001591926ba62064d263796d1975085.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5659bf1d65556a997fcf465153e87c82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f2b8896c2e7bb71b704ecefe398e2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e3ac83d244c70c5162016ff68106212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11208b0364abf5391b6be25df50af30e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e78346b2e8928ddf707b51f46c718ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ee24dff02803ae6918cd45d39356a0f.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e69866076dcff686a05e9e91e61e68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4c2bee43c4aaf6aeb901d7287dd339a.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/367e788c32187ae2cc97aaa24da1d40d.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcbd5bb726a08c308b48373afebbb768.png)
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3 . 若集合A具有以下性质:①
,
;②若x、
,则
,且
时,
.则称集合A是“好集”.
(1)分别判断集合
是否是“好集”,并说明理由;
(2)设集合A是“好集”,求证:若x、
,则
;
(3)对任意的一个“好集”A,证明:若x、
,则必有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2faf3937abcb6a59071c17bc6bb10f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35a2410ce34b36954ed4923e600d42f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e63c91626ffa91e590925e6f206c3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c46de01c5104b9112a688df37eadb000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f0e9c04402a0ffdaa25c3e3c82c7dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cd77104cc745d1e0e262122da34482d.png)
(1)分别判断集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc51474b54120493b300a14e566cbc0e.png)
(2)设集合A是“好集”,求证:若x、
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e63c91626ffa91e590925e6f206c3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/957d41dbe52b49c3a7339e3519a3fe84.png)
(3)对任意的一个“好集”A,证明:若x、
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e63c91626ffa91e590925e6f206c3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09db4828342fb0a79e0ea8d132b76e6f.png)
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4 . 若集合A具有①
,
,②若
,则
,且
时,
这两条性质,则称集合A是“好集”.
(1)分别判断集合
,有理数集Q是否是“好集”,并说明理由.
(2)设集合A是“好集”,求证:若
,则
.
(3)对任意的一个“好集”A,判断命题“若
,
,则
”的真假,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2faf3937abcb6a59071c17bc6bb10f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35a2410ce34b36954ed4923e600d42f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e13a814f8e081078dcf3788177affcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c46de01c5104b9112a688df37eadb000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f0e9c04402a0ffdaa25c3e3c82c7dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cd77104cc745d1e0e262122da34482d.png)
(1)分别判断集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9720fd3e90e0f5dedc985310efea84e4.png)
(2)设集合A是“好集”,求证:若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e13a814f8e081078dcf3788177affcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/957d41dbe52b49c3a7339e3519a3fe84.png)
(3)对任意的一个“好集”A,判断命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e63c91626ffa91e590925e6f206c3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae4f0ccdfc1206d809e581449d0452e.png)
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5 . 定义:若任意
(m,n可以相等但
) , 则集合
称为集合A的生成集;
(1)若集合
,
的生成集为
,
的子集个数为4个,求实数
的值;
(2)若集合
,
的生成集为
,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17f9849615359e0d43a363c88c537e6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a7dbb35ab5ab3303507508787d07714.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7015f5cf8b311524e318758a3fad9d9d.png)
(1)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff727bfe67fe15db7192f6af36529cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5c87f05f1391b208025accb5bfa1bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf22d7d1a965bda25168a233fb6290c.png)
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解题方法
6 . 已知数集
具有性质
:对任意的
与
两数中至少有一个属于
.
(1)分别判断数集
与
是否具有性质
,并说明理由;
(2)证明:
且对任意
都是
的因数;
(3)当
时,若
,求集合
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cc7c2805d9ca2cc2be997924a997395.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0859d1bea616cd66d0de37cba5292307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf9fc9e8c9940547678ff7934363f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(1)分别判断数集
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/997bbd93dff19a5dba79bcd9d92f3129.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13470c4e9665748fdd20d0b181abc8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34a420ab960b579fb9168022ced66b68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45cf86650443d1b86c79b1e3edc7e5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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7 . 若集合
具有以下性质:
①
;
②若
,则
,且
时,
.
则称集合
是“好集”.
(1)分别判断集合
,有理数集
是否是“好集”,直接写出结论;
(2)设集合
是“好集”,求证:若
,则
;
(3)设集合
是“好集”,求证:若
,则
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6c9b39503b6484104862e21772b1431.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e13a814f8e081078dcf3788177affcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c46de01c5104b9112a688df37eadb000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f0e9c04402a0ffdaa25c3e3c82c7dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cd77104cc745d1e0e262122da34482d.png)
则称集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(1)分别判断集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a05551b1d4b65f27a932c33ddb1cb6ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e680c82535270feea54ec5cc81fcc99.png)
(2)设集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e13a814f8e081078dcf3788177affcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/957d41dbe52b49c3a7339e3519a3fe84.png)
(3)设集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23b5cf69ccf1e1bed63531e804fd03a2.png)
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8 . 已知n元有限集
(
,
),若
,则称集合A为“n元和谐集”.
(1)写出一个“二元和谐集”(无需写计算过程);
(2)若正数集
是“二元和谐集”,试证明:元素
,
中至少有一个大于2;
(3)是否存在集合中元素均为正整数的“三元和谐集”?如果有,有几个?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb9e56ab45ddf991ae24983027e04b08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf910f82c3094b267a3d481d23d829f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a886e3d7d448ea2f360c6160c087fec6.png)
(1)写出一个“二元和谐集”(无需写计算过程);
(2)若正数集
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6a419b26f7e9c3325eb115189a1519f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
(3)是否存在集合中元素均为正整数的“三元和谐集”?如果有,有几个?请说明理由.
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2023-10-25更新
|
169次组卷
|
2卷引用:安徽铜陵市第一中学2023-2024学年高一上学期10月月考数学试题
2023高一·上海·专题练习
9 . 已知集合
.
(1)由于
,所以8属于集合
,判断9,10是否属于集合
;
(2)已知集合
,证明:“
”的充分条件是“
”;但“
”不是“
”的必要条件;
(3)写出所有满足集合
的偶数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77f912ee8b686b231b3e6ecbcf26250e.png)
(1)由于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6596702d0c35fec938e159c7b4702ae0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)已知集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/765038d98aaa2b44be5bc14b53baf76d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
(3)写出所有满足集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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