在数列
中,
,求数列
的通项公式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b956d7e8ed92aa826f13bf625bda9082.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
2023高三·全国·专题练习 查看更多[1]
(已下线)第三篇 数列、排列与组合 专题4 数列的不动点 微点4 数列的不动点综合训练
更新时间:2023-05-23 21:41:55
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【知识点】 数列通项公式求解
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解答题-问答题
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适中
(0.65)
【推荐2】设
是曲线
上的点列,
,是
轴正半轴 上 的点列,且
均是等边三角形, 又设它们的边长分别为
.
是数列
的前
项之和 .求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/246c363f1730158c9d29e0cbab35e1a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9739283fc8e3db07799f44473466798.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bccf05014acfa998c69695c2aeb6bddf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/275c5d1a5ece46adff2063590185aa38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a9816b600a4052fdd66a6ea083bf8d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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