设等差数列
的前
项和分别是
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588d8c2905b240a01154903704e643bf.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e567d7e9761951a266953c8d5042ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/478421b81927e435cbcf5acafa89efd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c1c8b1ef254025cb7aa5f10e1b823fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588d8c2905b240a01154903704e643bf.png)
22-23高三上·山西忻州·阶段练习 查看更多[8]
山西省忻州市2023届高三上学期第二次联考数学试题(已下线)第02讲 等差数列及其前n项和 (高频考点—精讲)-2内蒙古乌兰察布市化德县第一中学2022-2023学年高二上学期期中考试数学试题(已下线)4.2.2.2 等差数列的前n项和的性质及应用(练习)-2022-2023学年高二数学同步精品课堂(人教A版2019选择性必修第二册)(已下线)第3讲 等差数列的前 项和及性质10大题型(3)(已下线)专题4 等差数列的性质 微点2 等差数列前n项和的性质天津市蓟州区第一中学2023-2024学年高二上学期12月月考数学试题重庆市永川区北山中学2024届高三上学期期中数学试题
更新时间:2022-09-29 18:16:31
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【知识点】 两个等差数列的前n项和之比问题
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【推荐1】设等差数列
,
的前
项和分别为
,
,若
,则
=____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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【推荐2】等差数列
,
的前
项和分别是
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbb1a1639514ea48c16f96f5774d8e81.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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