题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012114010-23020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012114011-18737.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012114011-35494.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012114011-95885.png)
A.![]() | B.![]() | C.![]() | D.![]() |
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012114010-23020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012114011-18737.png)
则根据首项
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012114011-35494.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012114012-43204.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012114011-95885.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012114012-97623.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113948-55022.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113948-83314.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113948-27783.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113949-11811.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113959-36850.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113959-67095.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113919-43235.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113919-70084.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113920-98159.png)
(1)求证:数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113920-50756.png)
(2)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113919-43235.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113920-44219.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113857-95171.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113857-56857.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113858-82906.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113858-66878.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113858-87478.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113857-95171.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113858-34085.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113859-41687.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113859-94719.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113829-90494.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113829-11326.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113830-63180.png)
(1)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113829-90494.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113830-61509.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113829-11326.png)
(2)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113830-96736.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113830-90088.png)
(3)证明:不等式
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113831-24214.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113831-32757.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113831-35879.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113822-44661.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113822-86852.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113822-49307.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012113822-22952.png)
A.6 | B.8 | C.10 | D.11 |
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