设数列的前
项和为
,且
,则数列
的通项公式为
22-23高二下·河南周口·期中 查看更多[3]
河南省周口市项城市2022-2023学年高二下学期期中数学试题(已下线)第4章 数列 章末题型归纳总结(1)(已下线)第4章 数列单元检测(提优卷)-2023-2024学年高二数学《重难点题型·高分突破》(苏教版2019选择性必修第一册)
更新时间:2023-09-12 14:27:10
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【推荐1】已知数列
的首项为
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,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0382b4a2ab0657d2d6830bb6be2b17b6.png)
__________ .
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适中
(0.65)
解题方法
【推荐2】若数列
的首项
,且满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
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解题方法
【推荐1】若
为数列
的前
项和,且
,则下列结论正确的是________ .(填序号)
①
;②
;③数列
是等比数列;④数列
是等比数列.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a756acdba8837c07e1972187efe932b5.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3163718f8afa99c618a392c3fd78d11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5175bdcc8cdfae1df3bb418c9a22b3bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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您最近一年使用:0次
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【推荐2】已知数列
,则数列
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