题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102716-15709.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102716-30531.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102717-22387.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102717-89420.png)
的最大值为( )
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102717-41912.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102717-29081.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102718-58576.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102718-71130.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102718-79203.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102718-22939.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102719-48726.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102719-30509.png)
答案
解析
设
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102719-26935.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102719-26330.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102720-76452.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102720-69810.png)
又
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102720-30564.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102720-21715.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102721-84502.png)
且
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102721-79581.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102721-75783.png)
所以当
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102721-11374.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102721-19860.png)
故正确作案为
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102722-14155.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102707-76647.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102707-55540.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102707-71001.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102707-56976.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102707-99974.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102707-35653.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102707-71380.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102708-19672.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102708-56985.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102708-70584.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102709-44672.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102710-31943.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102710-66949.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102710-10324.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102710-95274.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102700-37894.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102701-66163.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102701-78321.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102701-86853.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102657-28397.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102657-83301.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102657-86014.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102658-57236.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102658-14413.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102642-82161.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102642-65054.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102642-10664.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102642-11472.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102642-86095.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103102643-60775.png)
A.![]() | B.1 | C.![]() | D.![]() |
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