题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081952-83434.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081952-76193.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081952-17090.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081953-23475.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081953-55910.png)
答案
解析
试题分析:因为数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081952-83434.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081953-11724.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081953-10931.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081953-55910.png)
点评:若
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081953-36599.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081954-68742.png)
核心考点
举一反三
已知数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081944-77951.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081944-62130.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081944-24707.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081944-30876.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081945-96478.png)
(1)求证:数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081945-66387.png)
(2)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081944-77951.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081945-35641.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081945-40594.png)
(3)设函数
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081945-33989.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081946-17071.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081946-42849.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081946-42995.png)
在数
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081929-38584.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081930-61531.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081930-27028.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081930-79258.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081930-79258.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081930-59962.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081931-25145.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081931-14795.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081931-94597.png)
(1)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081931-21379.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081930-27028.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081931-53891.png)
(2)求
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081932-16537.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081921-53209.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081921-93141.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081922-24726.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081922-63150.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081922-89050.png)
A.![]() |
B.![]() ![]() |
C.![]() ![]() |
D.![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081914-48079.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081914-93333.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081914-64373.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014081910-81022.png)
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