题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195853-57675.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195853-14117.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195854-91888.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195854-91059.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195854-90822.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195854-65959.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195855-28577.png)
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195855-54926.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195855-52976.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195855-29425.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195855-81370.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195856-10091.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195856-93159.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195815-57357.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195815-78683.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195816-64857.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195816-84445.png)
(Ⅰ)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195815-57357.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195822-51013.png)
(Ⅱ)设
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195822-13645.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195822-80459.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195823-89075.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195617-52111.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195618-11210.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195618-89989.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195618-90982.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010195618-54801.png)
A.0 | B.1 | C.2 | D.3 |
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010194920-49526.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010194920-86577.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010194921-33431.png)
(1)求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010194921-55584.png)
(2)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010194921-41599.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010194804-26540.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010194804-60452.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010194804-96100.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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