题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065448-38505.gif)
(1)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065448-19008.gif)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065448-90497.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065448-14914.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065449-11455.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065449-70561.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065449-27317.gif)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065449-65962.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065448-38505.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065449-70754.gif)
令
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065450-81150.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065450-42804.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065450-72722.gif)
x | (-![]() | -a | (-a,3a) | 3a | (3a,+![]() |
y![]() | + | 0 | - | 0 | + |
y | 增 | 极大值 | 减 | 极小值 | 增 |
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065451-30929.gif)
减区间为(-a,3a)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065449-70561.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065449-27317.gif)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065451-22557.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065451-55871.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065452-52478.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065452-36451.gif)
只需
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065452-32500.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065452-31570.gif)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065437-61479.gif)
(1)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065437-21794.gif)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065437-14020.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065437-51901.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065437-21794.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065427-93488.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065427-38274.gif)
(1)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065428-80635.gif)
(2)曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065428-75041.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065428-83248.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065428-69251.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065428-15357.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065429-38813.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065428-80635.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065429-17356.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065429-60418.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065429-97386.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065416-95338.gif)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065416-71981.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065416-61948.gif)
(2)若不等式
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065416-44973.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065417-52649.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065417-67695.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065357-93561.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065357-22538.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065357-19734.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065357-46635.gif)
(Ⅰ)求
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065357-57513.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065358-56567.gif)
(Ⅱ)讨论函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065357-46635.gif)
(Ⅲ)设
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065358-82097.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065357-46635.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065358-83720.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065342-55182.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065342-58762.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065342-10591.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065342-59490.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065343-24745.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065343-23007.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065343-24745.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065343-85910.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065343-27686.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065343-21769.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065343-97353.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018065342-10591.jpg)
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