若数列
的前
项和
,则下列结论正确的是( )
![](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/ad61c07a8df27d4028abcea3f9dc0c68.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
23-24高二上·天津宁河·期末 查看更多[2]
天津市宁河区2023-2024学年高二上学期期末考试数学试题(已下线)5.1.2 数列的递推(2知识点+6题型+强化训练)-【帮课堂】2023-2024学年高二数学同步学与练(人教B版2019选择性必修第三册)
更新时间:2024-01-25 21:37:54
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【知识点】 利用an与sn关系求通项或项
相似题推荐
单选题
|
较易
(0.85)
解题方法
【推荐1】已知数列
满足
,
,若
是
,
的等比中项,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15de767f5c2897a6c659651c8277213a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da4cd81500bdb43118150dbdb1541e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/681ae1522a36768618f7ddaf74abbb7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b07f7a46323e7630dd8cd5cffcb11a5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1505d56f0b35fe7f2de1fe1888036e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e486a69c94a6442bb2131452fd88996f.png)
A.12 | B.![]() | C.![]() | D.4 |
您最近一年使用:0次
单选题
|
较易
(0.85)
解题方法
【推荐2】等比数列
的前
项和
,则
=( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/606e55241a2e145d54849129b8ffd20f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6d0a991d59fb28a4340cdac0104c4d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2122e3f1e76a635e58e4d54aa594c552.png)
A.-2 | B.![]() | C.2 | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
解题方法
【推荐3】已知数列
的前 n 项和为
,则下列结论正确的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52481494649888492d86d0639538040f.png)
A.![]() |
B.对任意![]() ![]() ![]() |
C.![]() |
D.对任意![]() ![]() |
您最近一年使用:0次