题目
题型:不详难度:来源:
(Ⅰ)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054240-43954.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054240-15182.png)
(Ⅲ)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054240-34093.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054240-16112.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054240-28030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054240-49755.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054240-77006.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054241-87679.png)
解析
解:(1)因为
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054240-43954.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054240-28030.png)
(2) 因为
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054241-42676.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054241-66552.png)
(3) 因为
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054240-34093.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054240-77006.png)
(4)因为
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054240-16112.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054241-84925.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054232-36483.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054232-85180.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054232-12477.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054232-65008.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054233-49303.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054233-26497.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054233-45240.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054233-93476.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054225-38312.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054225-77483.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054226-82022.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054226-16158.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054226-39010.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054217-28475.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054217-27424.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054218-18768.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054203-88795.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054204-28009.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054204-54918.png)
A.![]() | B.![]() |
C.0 | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054152-96909.png)
(1)若函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054153-66327.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054153-35568.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054153-84030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054153-51678.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054154-84890.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054154-73371.png)
(3)设各项为正的数列
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054154-48934.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054154-86230.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018054154-96492.png)
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