求数列的和![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e007ee874310ddb95bb01e58414e51ea.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e007ee874310ddb95bb01e58414e51ea.png)
20-21高二上·上海·课后作业 查看更多[2]
沪教版(上海) 高二第一学期 新高考辅导与训练 第7章 数列与数学归纳法 7.8(1)无穷等比数列各项的和(已下线)2.5+等比数列的前n项和(1)(基础练)-2020-2021学年高二数学十分钟同步课堂专练(人教A版必修5)
更新时间:2020-06-26 13:05:07
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【知识点】 无穷等比数列各项的和
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【推荐1】已知无穷等比数列
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【推荐2】设数列
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)的首项
且
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
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