名校
解题方法
1 . 已知各项均为正数的数列
的前
项和为
.
(1)求证;数列
是等差数列,并求
的通项公式;
(2)若
表示不超过
的最大整数,如
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0055abd3f4b453a71aeed5671be3eac9.png)
(1)求证;数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/832d1e3a06f59a35396aac6e12c5e2ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32d35aa300393c90845b231301ec1dfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98e6904d1235b12e7333c54270a98106.png)
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2022-04-18更新
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8卷引用:江苏省南京市金陵中学2022届高三学业水平选择性模拟考前最后一卷数学试题