1 . 给定正数数列
满足,
,其中,
.证明:存在常数
,使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc928892636f6e07714b45c575a9409.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec8db667c0b62ee8c9c067b76e4019a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75aed2b995e34438a29a4170cf535914.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc988dd004a8bb7e2c48d8f6b31f0d30.png)
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2 . 已知
,对于正整数
,
.求证:当正整数
时,有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6855784817151468771f29c0fc38fc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26a98d37a426e050a32691c7a7549020.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59e8666bac6a7a3473be655dc8fc3ff9.png)
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3 . 设
.求证:对一切
,
为奇数(
表示不超过
的最大整数).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06adc19208773083767840db9320f142.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac69e6db1df13ed64756b4f391ae9fac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43432d71da42af831e724879b582cc45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ab85825d4a002600ca41bd3cd2ee7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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4 .
,
,…,
是互不相等的自然数.证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/610c6d0f613a10e8da6e1fd2d590afb0.png)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/610c6d0f613a10e8da6e1fd2d590afb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea72fdc41dd1e14adcda2b1fab2d49ca.png)
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5 . 已知数列
,
,…,
,…的各项都是非负实数,且
.求证:对所有不小于2的自然数
,都有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab580084e1a51e089e3638caa305aa91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e64f8ad1bee7edb4a9e2cd8fef8e605.png)
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6 . 已知
,
,
,…,
是
个正实数,
和
是正实数,满足
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724b8329d3378099b46e3e028d876436.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d536a075bfd5ed8bb0eb26175b59e13.png)
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7 . 已知对任意的
,有
,且
求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8172796a9473b3c17ef6429961203796.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14bcf7b4e318f4c6aeb307fff490a20e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90df8c09b29d55ee4cf9e5a092f2b64a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff79a8ed02af1803738d7c244226e96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e62e0fac816004f761126bb4b4b789d.png)
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8 . 已知数列
满足
,
用数学归纳法证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87f7d6af43e56f3ada07fe815792000b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cb9f585437a67fe3e094745a4023aad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9ef6481a52c8c0b25e2a720665b96e6.png)
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9 . 对任意的x和正整数n,比较
和
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c124a2370c9505c349d9baf5db1db4d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0d38e93e82f396e905f63f727f16ada.png)
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