解题方法
1 . 已知数列
的前n项和为
,已知
,
,
.
(1)求数列
的通项公式;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d922587d251838a56d9bc0a03a9a4f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1933b7c3ace69622339353431c519b13.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8299a8f99ae6c4dbb577636ab6be4676.png)
您最近一年使用:0次
2 . 已知函数
的图象上有一点列
,点
在
轴上的射影是
且
,
.
(Ⅰ)求数列
的通项公式;
(Ⅱ)对任意的正整数
,当
时,不等式
恒成立,求实数
的取值范围;
(Ⅲ)设四边形
的面积是
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/496e0c4482d9972b435ae52dbd3e7d7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9139468ad83be9ae53b7d5abcb3b00e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5a2c27c29d41effabc45ce431e6f2d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9bea3ad1b4028afb29b02ba7e902100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/754a5a4102094d0fc8a8c16c4fcd9bd4.png)
(Ⅰ)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
(Ⅱ)对任意的正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c395021157c73ac8dcde32864f7e121.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6102982da41db74434cf7d2aee4f0be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(Ⅲ)设四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1115b0ed47290e1a72adf1754eb8cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cae81ed5958a8a91331ad776aaee27cb.png)
您最近一年使用:0次
2020-06-29更新
|
503次组卷
|
6卷引用:内蒙古自治区阿拉善盟阿拉善盟第一中学2021-2022学年高二上学期第一次段数学试题
内蒙古自治区阿拉善盟阿拉善盟第一中学2021-2022学年高二上学期第一次段数学试题北师大版(2019) 选修第二册 名师精选 第三单元 等比数列 B卷人教B版(2019) 选修第三册 名师精选 第三单元 等比数列 B卷(已下线)卷05 等比数列·B卷·能力提升 -【重难点突破】2021-2022学年高二数学名校好题汇编同步测试卷(人教A版选择性必修第二册)2023版 苏教版(2019) 选修第一册 名师精选卷 第十一单元 等比数列 B卷贵州省遵义市南白中学2019-2020学年高一下学期第二次月考数学试题
名校
解题方法
3 . 已知各项非负的数列
满足:
,
.
(1)求证:
;
(2)记
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40f4e1236d7dc0366d9523d0cbb426be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfeca30957800097b2ec6dbb8aa52e3d.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7578ddb3cbecf4dd93397f5fe2d30f74.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f62a9b7115717939469c36b4e1908e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074d55218d713c03d9709cd9e85fb46e.png)
您最近一年使用:0次
2018-03-01更新
|
659次组卷
|
2卷引用:内蒙古阿拉善盟第一中学2021-2022学年高二上学期开学考试理科数学试题