已知数列
满足
.
(1)求
的通项公式,并证明:对任意的x>0,有
;
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2809a8152b50d110836e9f3672dcb8da.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/412344b6c0d2e24e0a3aa490732884ec.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db043bcbb8ca1a51370497ba507f34a0.png)
2010高三·新疆·竞赛 查看更多[1]
(已下线)2010年全国高中数学联赛新疆维吾尔自治区预赛试题
更新时间:2018-12-25 16:27:33
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解答题-问答题
|
适中
(0.65)
【推荐1】设函数
满足:
(1)对于任意的
都有
;
(2)对任意的
,都有
.令
.
证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9b5ce195a847be37fb191bef0ff5415.png)
(1)对于任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ee05c9ab481576a1f200cb878250db3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/958c91e0cc2cf4f17acb778de21846b9.png)
(2)对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209559aca6bf32705588b6a40e0b7320.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8296abd12e85b7eccd1090e8852c93a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0024ff05704b609d48329ef852646d5e.png)
证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d19126f4b4c6c5ff5a95be10f6efbf5.png)
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解答题-问答题
|
适中
(0.65)
【推荐2】设数列
满足
,
.
证明:(1)当
时,数列
严格单调递减;
(2)当
时,
.
![](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/50cf6c8c983260ecf7faf162105b0037.png)
证明:(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e167b43045b3297248e334c41c621b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4958ebf2e0d71291b1c317e5d42e86e5.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
【推荐1】一平面上有32个点,其中无三点共线.证明:在这32个点中至少能找到2135个四点组,形成凸四边形的四个顶点.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐2】已知数列
,
,…,
的各项均为整数,且对任意的
,2,…,
,都有
.将
的所有项之和记为
.
(1)若
,
,求
的最大值;
(2)若
,求证:
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/140b9dbcada4ac2e5fe3cc30009bcd67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5453ec6a9e8b96357c888ea863ddcf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7334c46af837676ada9575630a48d60f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c45176df950dfe48b8ca7eac08ee349.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa2648793a3889448088fa3f9f5aa49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/249ccefb918d906ca640ec76e53247e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bba7a40102e81f5759f7b05ebf5a18c.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcc133d5b11b33a904875182d8c8261.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2815b24f5a89be7ae53aed93182e8988.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bba7a40102e81f5759f7b05ebf5a18c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f8a0d4158a6df1bf0631095eb51c10c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eb189e7f5f358b2de87dc4b93413366.png)
您最近一年使用:0次