名校
解题方法
1 . 设
,若非空集合
同时满足以下4个条件,则称
是“
无和划分”:
①
;
②
;
③
,且
中的最小元素大于
中的最小元素;
④
,必有
.
(1)若
,判断
是否是“
无和划分”,并说明理由.
(2)已知
是“
无和划分”(
).
①证明:对于任意
,都有
;
②若存在
,使得
,记
,证明:
中的所有奇数都属于
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a70b95c53fb6655721e2a8c61f5c2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c8559db5cec89fb0ed29e8be8fdb0b1.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03710ecc47ca36cb01c337a71d300974.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b6e72a98cbc82cb24cb85aa3ab837f5.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35a2410ce34b36954ed4923e600d42f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e006283149b3d1662205b5271dd69db2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58f045d0c3275b992d4a4f90dcd20e63.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/408f3365f7c6767cd3f006022ee22413.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6da92a00c5e0121accc325e50f6492fe.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c8559db5cec89fb0ed29e8be8fdb0b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5818ede14d21f6df9ef9c2bfe09286c.png)
①证明:对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efb6b675fa03f7268b8cbd1f1d91bd27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4003dc977c4cacda932927eed9c9d10.png)
②若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8457b5be40500d437a83bb12e488b5eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09bd7ed301e00171b88549a8deb65035.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5203c10c41f8b8aaa4c9cc90f1f3271.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa35373ec4e4684107b42adb7a5161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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2024-06-10更新
|
119次组卷
|
2卷引用:北京市第一○一中学2024届高三下学期三模数学试题
2 . 拓扑学是一个研究图形(或集合)整体结构和性质的一门几何学,以抽象而严谨的语言将几何与集合联系起来,富有直观和逻辑.已知平面
,定义对
,
,其度量(距离)
并称
为一度量平面.设
,
,称平面区域
为以
为心,
为半径的球形邻域.
(1)试用集合语言描述两个球形邻域的交集;
(2)证明:
中的任意两个球形邻域的交集是若干个球形邻域的并集;
(3)一个集合称作“开集”当且仅当其是一个无边界的点集.证明:
的一个子集是开集当且仅当其可被表示为若干个球形邻域的并集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15e7cbf6370f2b5c37816278c4d52324.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cd50ba95ce394ae2cc7d8953268cad4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/528fd55bccdd48b002249e27153164dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e93599300cd0cc2ee3747a0a1a01a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331b36f89fa4fc1a314bd2fb469b6756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f853b9d71837401854312c2a3a2012d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663819fd38d196961788cad4e2e039a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77c4e98464e40174ae21e741ae79dea5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/678bfef0c3cf7ee6438c64d20ab44617.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd934b73981f16a85a9a9d6554ec9791.png)
(1)试用集合语言描述两个球形邻域的交集;
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba1985327691201a2fbcbb27689f2015.png)
(3)一个集合称作“开集”当且仅当其是一个无边界的点集.证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba1985327691201a2fbcbb27689f2015.png)
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19-20高一上·上海浦东新·期末
名校
3 . 已知函数
,其中
,
是非空数集且
.设
,
.
(1)若
,
,求
;
(2)是否存在实数
,使得
,且
?若存在,求出所有满足条件的
;若不存在,说明理由;
(3)若
且
,
,
单调递增,求集合
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/228d39bd253b6309490b993bf2c546dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5eb03e97d9498bff9c3dfac271dad01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910a5a38ad76a3956d4fbb60018f5537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce46b6c06abe5d56b7e19f67363faa1.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e524dec634a5e8db780f68fa1c3ed821.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5724cf6c4fc340d8fb84bbe5fbcb60d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b977aa808076972d9651b0bb6f3587b.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e270e5e488ded8f5eafb66f2df173692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b705d046e7fae44064427a61c5558d19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/525f894bd48d1634ac035205be132cdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1997004ac72ebafff467930153a7bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca05074e5a317ae45d073962bdf74dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85ba3e4b3a2464076c4e2e6fd82d8ee3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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