已知数列
的通项公式是
,数列
的前n项和为
,且
.那么![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bf37042b7cb6a358b905f67dca51109.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80180e6e8cd59f80d37923d3187cc590.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/b97a46f37fd3b2d9493777ed61fc35b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bf37042b7cb6a358b905f67dca51109.png)
2022·陕西咸阳·一模 查看更多[4]
陕西省咸阳市2022届高三下学期一模理科数学试题(已下线)NO.3 练悟专区——客观题满分练(一)-2022年高考数学二轮复习讲练测(新教材·新高考地区专用)湖北省武汉市部分重点中学2021-2022学年高二下学期3月联考数学试题内蒙古自治区赤峰红旗中学2022届高考考前适应性考试理科数学试题
更新时间:2022-02-17 19:20:00
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