题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033535-91216.png)
(Ⅰ)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033535-44736.png)
(Ⅱ)当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033535-56795.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033535-44736.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033535-22194.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033535-49915.png)
解析
试题分析:(Ⅰ)因为通过对函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033535-91216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033535-51038.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033535-44736.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033536-28574.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033536-45074.png)
(Ⅱ)因为由(Ⅰ)可得函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033535-44736.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033535-22194.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033536-60502.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033536-11425.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033537-88258.png)
试题解析:(Ⅰ)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033537-96269.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033537-43942.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033537-11064.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033537-73744.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033535-44736.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033535-22194.png)
(Ⅱ)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033536-60502.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033536-11425.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033537-88258.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033538-93372.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033538-31317.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033538-37522.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033526-60386.png)
(Ⅰ)设
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033526-36360.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033526-20383.png)
(Ⅱ)如何上下平移
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033527-16618.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033527-40895.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033514-52267.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033515-87184.png)
(Ⅰ)求曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033515-90076.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033515-46756.png)
(Ⅱ)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033515-90076.png)
(Ⅲ)若存在
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033515-86290.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033516-27543.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033516-55918.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033453-94661.png)
(Ⅰ)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033453-90555.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033453-59496.png)
(Ⅱ)证明:当a≥1时,证明不等式
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033453-90555.png)
(Ⅲ)对于在(0,1)中的任一个常数a,试探究是否存在x0>0,使得
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033453-84482.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033447-28296.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033447-56455.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033436-36132.png)
(Ⅰ)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033436-59396.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033436-39439.png)
(Ⅱ)讨论函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033436-59396.png)
(Ⅲ)若函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033437-23574.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033437-64517.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018033437-97127.png)
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