名校
解题方法
1 . 如图所示,曲线
上的点
与
轴正半轴上的点
及原点
构成一系列正三角形
(设
为
),记
,则数列
的通项公式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aef469c7b7cb9945b984222381b9c000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4983b9ba3015081cf0a2b88a1b76ac2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72c54c24439952b49c16688fe6b4d0b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7ea3c85a4dc03e75524dc2121298e48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b1698b9a76d725f9a254b9798d926fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e1e6fa67a8a73694ec55c5605103bfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/040a0a89-fe2f-4df5-a643-4d5d3dbcd353.png?resizew=180)
您最近一年使用:0次
名校
解题方法
2 . 已知数列
满足
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccc96ed98f4ab38bd8518a57620a698f.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37fd15f2ceebebe711c1dd159eb29998.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccc96ed98f4ab38bd8518a57620a698f.png)
您最近一年使用:0次
2021-12-23更新
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899次组卷
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