1 . 已知有n(n≥4)支足球队参加单循环赛,每两队赛一场,每场胜方得3分,负方得0分,平局各得1分,所有比赛结束后发现,各队的总分构成公差为1的等差数列,求最后一名得分的最大值.
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2 . 设
,以
表示正整数b,c的最小公倍数.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27234e2e7b22e5c1bdd8a7a221d9d7dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e682f89425146ac9cb16b2f13a014c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9197cd1f45fdd9415fc4e2d65915ddcd.png)
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3 . 设
,其中
和
都是实数,且
.证明:若
,则对一切正整数
,均有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0f167a87f1dfceaf858d4dde6ee94ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3fb0c9c7e30bbc0ec8c3521577ee4fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38335830b93ac4d99c28a8e209eecb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/921c99563c54509e2ebf587dfdb26e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/042235c88be02463c0b7bef603ae7e18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58edc69cbf7d0d5d1ce8a1dc6c125af5.png)
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4 . 已知
,
.证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac69e6db1df13ed64756b4f391ae9fac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e355789fe1363144c42e2c270e59e34.png)
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5 . 已知数列
满足
.
(1)证明:当n≥2时,
;
(2)当n≥4时,求
表示不超过实数x的最大整数).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c0449dd294ede7811635ebd98595c21.png)
(1)证明:当n≥2时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/986cb57bb3477c4c9dc1518b1d4b77d3.png)
(2)当n≥4时,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38cf77cceeea84669232fd3981f5529a.png)
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6 . 已知
,令
求
能取到的不同的整数值的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d4e786a33522b7aefe882287b08e3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0de0e2b8d9624c41f309cc348d932498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
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7 . 将一枚棋子放在一个
的棋盘上,记
为从左、上数第
行第
列的小方格,求所有的四元数组
,使得从
出发,经过每个小方格恰一次到达
(每步为将棋子从一个小方格移到与之有共同边的另一个小方格).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2f92a1ac461e9b71247cd59e12cb2d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb4d5ca4e251ff0e503a26f9a7375326.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7600d2cfbdc6146db96cc545706004f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c969c72b1466caaa73129f2ee968af3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3044d760ef9d263537c142478ac35c19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85f88bcbc7c997bd3f56170ce4c997c8.png)
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8 . 对给定的正整数
,定义
表示
的各个数位上的数字之和的平方,当
且
时,
表示
的各个数位上的数字之和的
次方,其中,当
为奇数时,
;当
为偶数时,
,试求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1580d1acb1ef184208d8a49694398cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10e468312d09c6563c9094b710a35a65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac69e6db1df13ed64756b4f391ae9fac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1622aec09c560184b0d253a7f53bf1bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66e90a6d7b5f61955a1d963892fc7bf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a135cb036833400f3fa1edc92d5ce410.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba3301f1a7b308916e5de17c38ebf1c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/029698978fcc20c10240e1dbcc1ec37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0030cefcfe3ce06aa02e80c4e2b351.png)
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9 . 正整数数列
满足:
,
.试求通项公式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/527bd6adefbb15deb6ad829d7584d072.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/191d7c7739907a08a2bbf5c23b6b3386.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
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