1 . 在公差不为
的等差数列
中,
为其前
项和,若
,则正整数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/554369ecc4e9abc2be7e252e2dd0e2d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
您最近一年使用:0次
2023-03-30更新
|
324次组卷
|
4卷引用:辽宁省本溪满族自治县高级中学2022-2023学年高二4月月考数学试题
2 . 已知数列
,
都是等差数列,且
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6345b8ecd2ce556ffae22af5478c95a.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/39af918606643a75956dd6c3db27ad4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e78af59259f4f954b45815cfb1b567d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6345b8ecd2ce556ffae22af5478c95a.png)
您最近一年使用:0次
2023-02-25更新
|
827次组卷
|
4卷引用:辽宁省本溪市本溪满族自治县高级中学2022-2023学年高三下学期2月月考数学试题