已知
,
分别是等差数列
,
的前n项和,且
,那么![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c737b1632546c67a2904ca5e2495df28.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.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/78ffb81f09e765577b298dc80a66a891.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c737b1632546c67a2904ca5e2495df28.png)
23-24高二上·安徽马鞍山·阶段练习 查看更多[2]
更新时间:2024-06-19 15:15:14
|
【知识点】 两个等差数列的前n项和之比问题
相似题推荐
填空题-单空题
|
较易
(0.85)
【推荐1】已知两个等差数列
,
的前
项和分别为
,
,若对任意的正整数
,都有
,则
等于______ .
![](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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ace7b414e6bb58378920686ed27f3a87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0531afa8c68994d49b946b9f88c11fa6.png)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
解题方法
【推荐2】已知
、
都是等差数列,
为
的前n项和,
为
的前n项和,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4863086901be9beea78c25d48ceb460.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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34b60828fbe4d3b7eb30e3880455cb67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4863086901be9beea78c25d48ceb460.png)
您最近一年使用:0次