题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013124-72661.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013125-91146.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013125-32665.gif)
答案
解析
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013108-26820.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013108-49864.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013108-79360.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013109-92258.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013109-83714.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013109-25324.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013109-43101.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013104-34588.gif)
| 1 | 3 | 5 | 7 |
15 | 13 | 11 | 9 | |
| 17 | 19 | 21 | 23 |
31 | 29 | 27 | 25 | |
| … | … | … | … |
… | … | … | … | |
已知
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013039-52369.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013040-18940.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013040-32669.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013040-98245.gif)
(1) 求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013039-52369.gif)
(2) 若数列
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013039-52369.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013040-92190.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013041-77451.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013041-45230.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013040-92190.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013041-45230.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013041-26524.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013023-75437.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013023-43850.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013023-45964.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013024-50843.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013024-27145.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013024-85213.gif)
(Ⅰ) 求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013023-75437.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013024-50843.gif)
(Ⅱ)记
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013024-77136.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013025-47658.gif)
(Ⅲ)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013025-11992.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013025-15746.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013013025-93489.gif)
A.138 | B.13 | C.95 | D.23 |
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