题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030501-23837.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030501-46466.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030501-81958.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030502-92323.png)
A.-2 | B.-![]() | C.![]() | D.2 |
答案
解析
试题分析:根据题意得
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030502-55269.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030502-71285.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030503-40739.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030503-12498.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030448-19876.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030448-88330.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030448-21695.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030449-80200.png)
(Ⅰ)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030448-19876.png)
(Ⅱ)记
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030449-53589.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030449-40885.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030449-60449.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030413-14807.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030413-29127.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030413-92098.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030413-29673.png)
A.![]() ![]() | B.![]() | C.![]() | D.![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030359-21134.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030359-35282.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030359-90806.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030359-75431.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030359-89692.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030400-83950.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030400-20220.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030359-35282.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030400-31130.png)
(Ⅱ)设数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030400-67404.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030359-90806.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030401-76428.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030400-83950.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030359-90806.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030401-58451.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030401-44769.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030341-73323.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030341-35907.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030341-34307.png)
(Ⅰ)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030341-73323.png)
(Ⅱ)令
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030342-38621.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030342-93363.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030342-44946.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030342-35024.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030342-69065.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030343-91976.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030323-62138.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030323-37295.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030323-82797.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012030323-62138.png)
A.23 | B.95 | C.135 | D.138 |
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