题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015519-84513.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015519-97851.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015519-61637.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015519-97851.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015519-17753.png)
(1)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015519-87240.png)
(2)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015520-66090.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015520-74240.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015520-20849.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015520-39248.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015521-26865.png)
极小值是
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015521-47283.png)
解析
试题分析:(1)可求得
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015521-46342.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015521-29504.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015522-73145.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015522-30843.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015522-49254.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015522-40973.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015522-94861.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015523-14131.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015523-92790.png)
解:(1)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015521-46342.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015523-82975.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015521-29504.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015523-42397.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015519-97851.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015524-25188.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015523-82975.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015524-18890.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015522-30843.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015523-82975.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015520-74240.png)
(2)函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015520-20849.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015524-42737.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015524-55913.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015523-82975.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015522-40973.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015522-94861.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015523-14131.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015523-92790.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015523-82975.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015520-20849.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015520-39248.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015521-26865.png)
极小值是
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015521-47283.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015459-96860.png)
(1)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015459-44781.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015459-96740.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015500-11880.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015500-97388.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015500-78219.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015500-97556.png)
(3)证明:当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015500-84492.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015501-58021.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015442-46268.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015443-13236.png)
(2)若关于
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015443-29725.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015443-49515.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015436-38271.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015436-44852.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015432-13646.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015433-89675.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015422-87137.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015423-90003.png)
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