名校
解题方法
1 . 设
为数列
的前n项和,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/924715c03041e8f84f755abc5dffb1e6.png)
(1)证明:数列
是等差数列;
(2)求数列
的通项公式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/924715c03041e8f84f755abc5dffb1e6.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39fe0bf16d617721a0a45e2980884982.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
您最近一年使用:0次
2022-01-11更新
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816次组卷
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3卷引用:湖北省鄂州市第二中学2023-2024学年高二上学期12月月考数学试题