题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-68819.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-96902.gif)
(Ⅰ)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-68819.gif)
(Ⅱ)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-88622.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-68819.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-96627.gif)
(III)若函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-83983.gif)
(参考数据
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-43824.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-68819.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-16137.gif)
∵ex>0. ∴g(x)=x2-2在(-∞,-
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-55359.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-55359.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-55359.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-55359.gif)
函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-68819.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-55359.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-55359.gif)
(Ⅱ)①当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-55359.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-96627.gif)
∵由(Ⅰ)得
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-68819.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-55359.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-68819.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-55359.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-96627.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060704-77656.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060704-68276.gif)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-68819.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-96627.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060704-77656.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-68819.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-96627.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060704-65485.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-55359.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060704-26463.gif)
------------8分
② 当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060704-52671.gif)
∵由(Ⅰ)得
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-68819.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-55359.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-68819.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-55359.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-96627.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060704-95513.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060704-77656.gif)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-68819.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-96627.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060704-95513.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-68819.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-96627.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060704-65485.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-55359.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060704-26463.gif)
------------10分
(III)实数k的取值范围是(0,(2+2
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060703-55359.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060704-14517.gif)
------------12分
解析
核心考点
试题【已知函数=(e为自然对数的底数) (Ⅰ)求函数单调递增区间;(5分)(Ⅱ)若,求函数在区间[0,]上的最大值和最小值.(5分)(III)若函数的图象有三个不同的】;主要考察你对常见函数的导数等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060654-44173.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060655-22851.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060655-76299.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060654-44173.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060654-44173.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060655-92190.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060655-38900.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060655-18969.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060656-48866.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060656-37316.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060655-22851.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060656-74232.jpg)
① 在阅读下
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060656-51406.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060656-50445.gif)
② 试问:骑车人何时与客车第二次相遇?(要求写
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060657-73738.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060643-27246.gif)
(Ⅰ)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060644-11854.gif)
(Ⅱ)若函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060644-45645.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018060644-55994.gif)
A.3 B. C.2 D.
A.a>b>c | B.c>b>a |
C.c>a>b | D.a>c>b |
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