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1 . 设公比为
的等比数列
的前
项和为
.若
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aaab013c25b014549fd0675c2b34df1.png)
![](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/b150764a56bf4ec830ae0d21f713f2e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61c03d6307f08eafb519ac87bdd13283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d99fef1aa4dbcc6dc7b30b7d2c9a9.png)
A.![]() | B.![]() | C.![]() | D.2 |
您最近一年使用:0次
2020-06-04更新
|
309次组卷
|
4卷引用:卷17-【赢在高考·黄金20卷】备战2021高考数学全真模拟卷(北京专用)
(已下线)卷17-【赢在高考·黄金20卷】备战2021高考数学全真模拟卷(北京专用)浙江省浙北G2(湖州中学、嘉兴一中)2019-2020学年高一下学期期中数学试题新疆师范大学附属中学2019-2020学年高一下学期期末考试数学试题(已下线)专题01 数列(6大考点经典基础练+优选提升练)-【好题汇编】备战2023-2024学年高二数学下学期期末真题分类汇编(新高考专用)
2 . 已知数列{an}的首项a1=3,前n项和为Sn,an+1=2Sn+3,n∈N*,设 bn=log3an,数列
的前 n项和Tn的范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a6c852d593cb9f6bdfd9eeddb50fa3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
3 . 数列
中,已知
,
,且
,(
且
),则此数列为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c752ebe8516e7d3327f3410473d9a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7110f600351b404b84e6d252d36b4ca5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd67791e11bf12e41449eed1781e2f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1505d56f0b35fe7f2de1fe1888036e4c.png)
A.等差数列 | B.等比数列 |
C.从第二项起为等差数列 | D.从第二项起为等比数列 |
您最近一年使用:0次
2018-03-07更新
|
775次组卷
|
2卷引用:西北师大附中2018届高三下学期第二次模拟数学(文)试题