1 . 已知数列
满足
,
.
(1)证明:数列
为等比数列.
(2)求数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29518f13a1ebc3fff8181c2d7cfba22f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/164659e154e10c13694e2f4a36a3d3e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f19112256c661c47057ae72962a3a2a.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dd7fe32cbbf55c0ef0edbfb99b31a55.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7d1de52d5b738dd058b8afb7e77f337.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b708c8dcb2d66eb2ce0b3718a9cd924a.png)
您最近一年使用:0次
2022-01-16更新
|
2126次组卷
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6卷引用:贵州省黔西南州2021~2022学年高二上学期期中考试数学(理)试题
贵州省黔西南州2021~2022学年高二上学期期中考试数学(理)试题河南省南阳市第一中学校2021-2022学年高三上学期第一次网上训练数学(文)试题(已下线)专题二十 数列求和(已下线)专题27 数列求和-3河南省南阳地区2021-2022学年高二上学期期中热身摸底考试数学试题(已下线)第7讲 数列求和9种常见题型总结 (3)
2 . 定义
表示实数
中的较大的数.已知数列
满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7fab51121848ce166035ceab6f4e00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d8944b0abe122bf859fe34efd4cff42.png)
,若
,记数列
的前
项和为
,则
的值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455f756bd43cd7638a3ecfb77dd8662f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7fab51121848ce166035ceab6f4e00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d8944b0abe122bf859fe34efd4cff42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ceec776c679c9af0dbbe47b5114f31d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a17b2e3ead0ac07eb42640c13bd2b36e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.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/18ba5d7d7a066e3a50bf47f8360ef51a.png)
您最近一年使用:0次
名校
3 . 数列
的通项公式为
,则
=________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fba90ecb22c8f673228be500e3ef325f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc3a6e626855e050c46339e432f3bf11.png)
您最近一年使用:0次
2019-03-28更新
|
825次组卷
|
2卷引用:【全国百强校】贵州省遵义航天高级中学2018-2019学年高一下学期第一次(3月)月考数学试题