解答题-问答题 较难0.4 引用1 组卷1050
已知数列
和
中,数列
的前
项和为
若点
在函数
的图象上,点
在函数
的图象上.设数列![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/8af72bfab3b347f8af8bcb6ddc4cd0cd.png)
.
(Ⅰ)求数列
的通项公式;
(Ⅱ)求数列
的前
项和
;
(Ⅲ)求数列
的最大值.
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/70c4be8fb61e4e2eb0c29365bdd28075.png)
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/fd395a1e04f84a94ace58c3b9fc763ba.png)
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/70c4be8fb61e4e2eb0c29365bdd28075.png)
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/35f3d716595842c4b381cac036e04ac2.png)
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/c6e58fbce23a41569b7c4bfee5431e38.png)
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/3f874ff8fa354a9ba5e6fd436a04eff7.png)
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/cb73d3b1341641f192ae86b1e25d842e.png)
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/e0b227d3102b429ba41818e175b9672d.png)
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/8af72bfab3b347f8af8bcb6ddc4cd0cd.png)
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/9988de96b57647b18b3115c6ae6f5cff.png)
(Ⅰ)求数列
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/70c4be8fb61e4e2eb0c29365bdd28075.png)
(Ⅱ)求数列
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/9d06a8e638bf4564b12f4334f69a0796.png)
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/35f3d716595842c4b381cac036e04ac2.png)
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/ad3726eeff62439ca110b034c696e502.png)
(Ⅲ)求数列
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256853147648/1572256858939392/STEM/9d06a8e638bf4564b12f4334f69a0796.png)
14-15高一下·重庆·期末
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