1 . 设
和
为两组复数,满足:
.求证:存在数组
(其中
),使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40b2f1f2faeb04505752c4c08b5d4a24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b023415e27a14faac81fd5237fa1a3.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f094ba98f6c02216c714bd9ff85bd59f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c72aec1d89b300f5a069080cdd3e1a.png)
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2 . 对于区间
与函数
,定义区间Ⅰ的长度为
.已知二次函数
对于任何长度为1的区间Ⅰ,均有
,求证:对于任何长度为2的区间J,均有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/032c016c3bcda8efda705223d465b36d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17422461d5ec2bff93452619c6b774f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3afdc3a225179deec6951b7c0f425ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eba0987d1ad350c024b123e384afb11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/181fe52672e9155eda63bad8e1162193.png)
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3 . 设多项式
的系数为正整数.定义数列
:
.证明:对于任意的整数
,均存在质数p,使得
,且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62414746495e3baf671a61e4437293bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27790939d8fb697b2a96cb342d79c17c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4c782e501c81338a18b24fd7f1d6e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e1d216fc9d7ed822f9805b4faee18fe.png)
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4 . 给定一个
的方格棋盘,其中有n个格子上各放置一枚棋子.对每个棋子,以其所在格为中心作一个
的边平行于相应棋盘边界的正方形,这个正方形称为该棋子的范围.已知每个棋子范围中恰有一个其他棋子,求n的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0151485ce5eef418e8ed893466afe67e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/954253b16a82489bb0e152543428c68a.png)
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5 . 在锐角
中,D为边
上一定点,P为
边上一动点,直线
交
于点Q,
交
于点X.
、
、
的三个外接圆分别交
于X外的另三点
、
、
,过
、
、
分别作
垂线
、
、
,证明:
、
、
均过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a97d0a38b4bcbe8deff0045ca59f151.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef8fe16a80bc081ce853a20420ae33ff.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/351bb3f3c54604330fa5b6c2bc3a7502.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177b7f56650f15cdcabd287ee39554d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58a9b86a58f9b76942e92c895ed75352.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177b7f56650f15cdcabd287ee39554d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58a9b86a58f9b76942e92c895ed75352.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
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6 . 设
是连续
个正整数组成的集合,求最小的正整数k,使得M的任何k元子集中都存在
个数
满足
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b80ac229d3f7e499678472babe45fbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e99f542cd1ca03e2b1ce460db7fb36c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0623207595425920f16e76a7f8f268b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbcf54ce905695c027f18ff254ed8d98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c0240713c6956a588d7cf4a3dfc3383.png)
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7 . 记
(在模p意义下,其中p为奇质数),
为系数定义在F上的多项式且
,n为未定元
的个数.若
,证明:
除
外还有一个零点,即存在
,使得
.(注:
取值也均从F中取,本题中所有等于与取值均在模意义下进行)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35dd550418727002303dcb78a97753e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/624aa609f64a154837e193b99106976d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0da7efde4b6ec8a5b3ad0072dbff8e58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97ea8f47d8d8d9e1832d52b1c7425450.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dd7e8b827ca8e07e37ff568f84bc22c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d487d52b28df15d525ec548e29935163.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5cc49023f952cc3962ab19a50550990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6c792a5b1a673f6cb70701c6cbae1c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e6112fb22c49f0206a3a4564754e522.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97ea8f47d8d8d9e1832d52b1c7425450.png)
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8 . 一个大于1的整数m,如果对所有的正整数n,都存在正整数x、y、z,使得
,则称m为上数,否则称为下数.试问:是否存在无数多的上数?是否存在无数多的下数?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10663f240e21ee63e7e163ff92919bb0.png)
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9 . 给定正整数m、n,一个
的正方形由8个白色及1个黑色的
的正方形构成,其中黑色正方形在正中间.一个
的大正方形由
个这样的
的正方形构成.现将一些
的白色正方形染成红色,使得每个白色正方形都至少与一个红色正方形有公共顶点.求最少的需要染红的正方形的数目.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/777d8fccf0cf8b55a68488fe48b78744.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d338f176b562d715d5741cf454b9c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/202f4e4e16aeb4f35590c0a1a3d500a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1019d4ad2e3fb4a7abb66e0e9e55b556.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/777d8fccf0cf8b55a68488fe48b78744.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d338f176b562d715d5741cf454b9c9.png)
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10 . 已知集合
满足
,若P为集合B的边界线C上任意一点,
为曲线C的焦点,I为
的内心,直线
和
的斜率分别为
,且
则t的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a85833789e336ae6593192bd9b8b79fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf22d7d1a965bda25168a233fb6290c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c38928a92bc4b44ed3c9b89769f5372.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e8add784e2db2e6a22254cf4d1b1d43.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42623f14667ebfa914eb12d026023d6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0276c0122da9760aaa627ac83465e36.png)
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