名校
1 . 定义:如果甲队赢了乙队,乙队赢了丙队,而丙队又赢了甲队,则称甲乙丙为一个“友好组”.如果20支球队参加单循环比赛,则友好组个数的最大值为__________ .
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2023-02-07更新
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1562次组卷
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3卷引用:浙江省金华第一中学2022年全国高中数学联赛一试考前押题最后一卷
2 . 符号
表示不超过
的最大整数,
为正整数,求:
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72e90b41a295a4b424cf37f5640430dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a425978da20cebf8c4c63953579e7b35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77b36ee2eebae5b276242089079dcace.png)
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3 .
的边分别为a,b,c,且满足
,则
的取值范围为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ff214d99784c6b23b7784bdaf3ed37a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/399461908ddad512b53d04d80f4ca580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c51967992d093c51c7d28c46e3840a95.png)
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4 . 设实数
,函数
.若存在实数
满足
,且
,则实数
的取值范围为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17753ced68ae325254eb3c7345d0663a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5e6414f6fd59ad6c89c35ae67cdd7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a21b80fe7b352e8fa33c4a299aa81f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ad827715ddd2376a69bfc1ccd9d5c75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8761a5477e88c05a81403ce736612e9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4887473a8091e1ef53a169cc9f211e3a.png)
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5 . 已知
,求最大的实数
,使得对任意大于2022的正整数
及实数
,存在集合
的一个子集
满足
对所有
恒成立且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3c5cb4d381a7d02ed31e3d92ce4306e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a425978da20cebf8c4c63953579e7b35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6c6971463b9839ecc1c2352ae0afb7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0478ec4c7dcce9fa624789a6223eb53d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44c4dce884147e801b50675b9c0714e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e64c35495f9f68ad197ba30902915c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d81314852212a08f2e6d36338d0368a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0a9f3aaedf6f256f10159eaf262a5b.png)
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6 . 设
为整数,数列
定义为
,
,且对任意
都有
.试求所有的
,使得这个数列的每一项都是完全平方数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7bf0d4b73924e85ee5be8d6b170ee7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e18aa1cccf2f341a7886ca7a22d63513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01fc0bf43fa7dcffcf1daebc1b0830c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97bccd30b914efbdf1bcedfb60d63b1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5575ee73675d9fb24280bb3d8d33361.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db0b397225aafbf5906a2b928c8f2947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab4717e4827480f0f6f4ded85e52eab.png)
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7 . 已知
,
,
,
,1,2,…,则满足
的最小正整数n为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d22ac81dfffec9c7eabf4119eea7ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9675214dcec606b8b95fc40f3c1e07e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47b4c70672d5cdb3079f7d6ef0b8395b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fbde97699a18dfed26535425ad37fc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65ea26b90e2f223146b6e88a12e99df8.png)
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8 . 设数列
满足
,
,则
的值为______ .(结果用
和
表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28ef6f1b2279af482557a8ea46f2e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0427551c379611f42d01e1fbc07c7c92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5fd2bff68aa7c5f33b0441756ef7530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0927f25906574feaaba7c5b207a91e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74a5771f2c592b64f54f35ba1e2df0dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d8ae104d924e78bb6fab0dc10d0f50c.png)
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9 . 给定正整数n,
,记
从
的一一映射f称为是可
划分的:若X可划分为k个非空子集
,
,…,
,且
(
,2,…,k)(即
,且
,
,…,
两两的交集为空集,
).已知f是一个X的
划分的一一映射,
,
,…,
是1,2,…,n的一个排列,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7863f720c810be5158d84a0e9b5e5be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b056db510d3e75cc12adc855015ad448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31556cfdfe2ebbf0dacfbb9e28f968ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307e85746fa628650484d89e3b9809ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9721059d158853671eaf19e39769b13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd8db4b168ddbcba90ac9b31d36a0432.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7f2c72ab559a0615db4c51327b78d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd2781fa12b524b3b01f02d7b9d8f68a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a88501f72db91e5cf1a42114b4300ad6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb67fb9b5a8e475087ecc2a0aaca869a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9721059d158853671eaf19e39769b13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd8db4b168ddbcba90ac9b31d36a0432.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7f2c72ab559a0615db4c51327b78d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7187f7b32e990b39cf9df84428660a42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307e85746fa628650484d89e3b9809ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d04a8b7a7595251251b8e0b7e665e8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5453ec6a9e8b96357c888ea863ddcf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a10902a745902e85100175a0d7788fe.png)
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10 . 设a,b,c,
,
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/731fceab5fd883f0598f34713db4242f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57e209cfb730513dc749d8efe85ca50c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb0e70c2e75fad4d49574103c7c5f03d.png)
您最近一年使用:0次