已知数列
的通项公式为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6ff5326aae8060d7b095d4dcc92c754.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20f90713833251734ee9844bd7d01552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6ff5326aae8060d7b095d4dcc92c754.png)
20-21高二上·河南·阶段练习 查看更多[2]
河南省全国百强校“领军考试”2020-2021学年高二上学期12月联考数学(文)试题(已下线)突破4.6 重难点之求数列的前n项和课时训练-【新教材优创】突破满分数学之2020-2021学年高二数学课时训练(人教A版2019选择性必修第二册)
更新时间:2021-02-07 21:24:15
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