已知每一项都是正数的数列
满足
,
.
(1)证明:
.
(2)证明:
.
(3)记
为数列
的前n项和,证明∶
.
![](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/477e884b7e082210742e203285e7a3cd.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3535b874c4407b1499b2299854b30a77.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e41e34aef045fb05a5e3e64ee07ea54.png)
(3)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/770d5bfe9a8c79269f21e5e76e8bde51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1fa62547035003b5751493e05db2e24.png)
2017·浙江·一模 查看更多[5]
(已下线)2017届浙江省高三“超级全能生”3月联考数学试卷(已下线)专题14 类等差法和类等比法 微点2 类等差法和类等比法综合训练(已下线)第五章 数 列 专题1 数列中的不等关系的证明(已下线)第五章 数列 专题1 数列中的不等关系的证明(已下线)重难点突破01 数列的综合应用 (十三大题型)-1
更新时间:2023-06-28 23:32:35
|
相似题推荐
解答题-问答题
|
较难
(0.4)
名校
解题方法
【推荐1】已知函数
.
(Ⅰ)求方程
的实数解;
(Ⅱ)如果数列
满足
,
(
),是否存在实数
,使得
对所有的
都成立?证明你的结论.
(Ⅲ)在(Ⅱ)的条件下,设数列
的前
项的和为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c568ccd3aa8a7a5161cf394030b94968.png)
(Ⅰ)求方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd689fbacfbe6c1bd0953521bbf3638b.png)
(Ⅱ)如果数列
![](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/5cfb19f0c37a72b33083ae9319f11a74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6baa2eb274e9af7cc5c78b9b8f1fc13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
(Ⅲ)在(Ⅱ)的条件下,设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a2b4c25547664c0ebc2da393109ad1.png)
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解答题-证明题
|
较难
(0.4)
解题方法
【推荐2】已知数列
,
,
.
(1)求证:
;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea8d0e50065114b05ef2dc1ea1129cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da083c631cbebbfd212988f995e19478.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a03580918dd4526cb5729bff4c0bcca.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d9d11de740acef4907e762ddc7d8a97.png)
您最近一年使用:0次
【推荐1】已知数列
中的相邻两项
,
是关于
的方程
的两个根,且
.
(1)求
,
,
,
;
(2)求数列
的前
项和
;
(3)记
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7b6ecfdff9d2b29ef64d2a6f3343f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39773a450e3c30c72ead226d84e54563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e17c3925955291056e16a4e075b3a13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23195d199724aea88a760a0ae35ff9b8.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fd71bc7e6668f90f259ad0b06dd60c2.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d51f9147b8265c0276c1f2c2659197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b9a0d7150fb24be3e28ef7f0e18be93.png)
(3)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a742c7b44a3b6ebbbe78d5e0ad04bca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0e01c1fac9f9ed8d588d4e85c0db8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c3e29cafd6334eca70149f61f34ca7c.png)
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解答题-问答题
|
较难
(0.4)
解题方法
【推荐2】如图,曲线
上的点
与
轴正半轴上的点
及原点
构成一系列正
(记
为
),记
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/979a4e4a-cb60-4e39-ac4c-1fb17417311d.png?resizew=164)
(1)求
的值;
(2)求数列
的通项公式;
(3)证明:当
时.
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aef469c7b7cb9945b984222381b9c000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e60a6b55307ba251e5b1f1875fea7b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1fc903da7487dcd2f069b50a5cf2bd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891bfec344c7c436048422ec870cd1c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b1698b9a76d725f9a254b9798d926fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8eafd399fdaaf4fd4e66e5e4030d87.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/979a4e4a-cb60-4e39-ac4c-1fb17417311d.png?resizew=164)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bc5735838e43b7a229e8f45c9bfffb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5564c2fbd87b71d2806f92a274ab9b7.png)
您最近一年使用:0次