题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160834-29335.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160834-29335.png)
A.9 | B.6 | C.3 | D.12 |
答案
解析
试题分析:
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160834-97604.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160430-65199.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160430-47010.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160431-27461.png)
(Ⅰ)当数列
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160430-65199.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160431-91052.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160430-47010.png)
(Ⅱ)设
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160430-65199.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160430-47010.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160430-65199.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160430-47010.png)
(Ⅲ)设
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160431-99124.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160431-94060.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160431-76982.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160355-72388.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160355-38551.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160355-89610.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160356-88684.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160356-41730.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160356-37747.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160356-20548.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160304-65746.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160304-76963.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160304-83513.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160305-87952.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160231-57855.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160231-56882.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160232-58609.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160232-65704.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160232-62695.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160232-52968.png)
(1)证明:设
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160233-87328.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160233-88066.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160233-26542.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160233-98019.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160212-91912.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160212-93832.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160212-48372.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160213-68140.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160213-33874.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160213-39821.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009160213-39603.png)
1 5 12 22
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