1 . 已知数列
、
满足
,
,
,
.
证明:(1)
;
(2)若
,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1165edc23b5782b5942ef7e79130bb94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87a60302649eb940748da818199e55da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6223b5ab2db7f6064bae94b86edca0b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15286e776ce9f090bb8df23e6e30a3bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4debd5c766517822211fc72be53ccd0.png)
证明:(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1897b8286632f5e9fb275fdac17fc78.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/796d2645ff431d92de68c06bc7fce212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59a462462b08240c52d6289817d3d2cf.png)
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2 . 设数列
满足对一切正整数n,恒有
,求数列
的通项公式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e95953fd29aa13806f496ecdc3118076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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3 . 已知点
满足
,
,且
,过点
、
的直线为l.
(1)证明:对于任意的
,点
均在直线l上;
(2)求对所有
,均有
的最大实数k的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c6437c5e60fb22c44918407eb5c9d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/494852b4d9a733c2280ffdcc61922e55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e5683b07918aeb75bbfa433481339b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c145a6016c25380c42befbe972441dfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
(1)证明:对于任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deffbcb0165f1a90a435d50118a14b68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
(2)求对所有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deffbcb0165f1a90a435d50118a14b68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f75be2c58f1bdc5341dab15c5907c378.png)
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4 . 设数列
满足
,
,
.证明:对任意的
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0914c295f572c98dd043d4f84268934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cd437667dce6e14f7385229744206d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b458f442153a27ca49851dbdaaea0870.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce70c2e6a23b544aef214ddf077c19a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d50b3aa064d4b897a9780e01af079c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee36a2db232683d422a277051aec38f7.png)
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5 . 证明:对任意的
,
,都存在个互不相等的自然数组成的集合
,使得对任意的
和
,
都可以整除
.
![](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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/582ad43edf388c096e7704d92340bf75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dab92728b35ed5798e07a2b0095bfcc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a13880b9454c5942f164d934b1834783.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
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6 . 函数
定义如下:
,
,设在
上使
取最大值的
的个数为
,取最小值的
的个数为
,试把
和
用
表出,并用数学归纳法证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/014adc2178ef62306a619574b605bbe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cffa49e74bd0cfe880cf519e75d94f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f69cfc836c34d9333027da75f11749a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e89220eb96a4757f2988362bc04e80c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
7 . 记
表示不超过实数x的最大整数,已知数列
满足
,
.设
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0075cf7d2a08d0221be72ea469d81323.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25814fb33f1aa4432ee6c820cd45b84c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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8 . 数列
和
满足
,
,
,
. 求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/181d17e12484ee0049cf6c078d003f8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecefbbc489d1297bda1b5602fd10522d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce314f8ca448bfb39ffdb072abf722ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e1143cc30cf9373205e699b915d5e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aec5334cea99bb2787d0e4fabbfba9f.png)
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9 . 用
表示由0和1组成的长度为
的排列中,没有两个1相连的排列个数.约定
.证明:
(1)
,
;
(2)
能被3整除,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38fcec7af3520884b173b29bda6c657a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51eb2613dda00677d447c986cac505bc.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb9f7acd7bc7d80ed498eb17e9e92411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c02c6dcfcc7810d0dd620d92cd80137.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3d165046175c70690335c3c8ce97b9d.png)
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10 . 设k(k≥3)个正整数
依次成等比数列.求证:当
时,这个等比数列的公比q必为正整数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31149eb8330ed2df45b5eef49037640f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/998ae29eeff1de29ce414932d11aa743.png)
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