题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175340-92028.gif)
(I)当
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175341-73587.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175341-65910.gif)
(II) 若函数
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175341-65910.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175341-19265.gif)
(III)对任意
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175341-12944.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175341-65910.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175342-12127.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175342-89401.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175342-53215.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175342-92879.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175342-90496.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175343-70972.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175343-15507.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175343-94758.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175343-70972.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175343-29343.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175344-46342.gif)
由
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175344-30987.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175342-90496.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175343-94758.gif)
而
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175341-73587.gif)
![]() | ![]() | 0 | ![]() | ![]() | ![]() |
![]() | — | 0 | + | 0 | — |
![]() | 递减 | 极小值 | 递增 | 极大值 | 递减 |
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175342-90496.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175343-70972.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175343-15507.gif)
当
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175343-94758.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175343-70972.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175343-29343.gif)
(II)设函数
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175345-66403.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175346-28716.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175346-45809.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175346-49977.gif)
(注:若直接用
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175346-72909.gif)
(III)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175346-65220.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175347-77773.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175347-50740.gif)
核心考点
试题【(本小题满分16分)已知函数.(I)当时,求函数的极值;(II) 若函数的图象上任意不同的两点连线的斜率都小于2,求证:;(III)对任意的图像在处的切线的斜率】;主要考察你对函数的相关概念等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175315-36044.gif)
(Ⅰ)如果对任意
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175315-44857.gif)
(Ⅱ)设实数
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175315-12240.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175315-12240.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175316-48082.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175316-24404.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175316-15288.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175316-76828.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175317-46920.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175317-46920.gif)
(Ⅲ)对于(Ⅱ)中的
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175317-46920.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175317-39270.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175317-77507.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175317-91897.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175317-68109.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175318-25418.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175318-13123.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175318-75009.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175259-79873.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175300-35924.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175300-39887.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175259-79873.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175300-40441.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175300-16265.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175301-28531.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175301-84403.jpg)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175255-12570.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175255-87667.gif)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175234-19947.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175235-69487.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175235-34389.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175235-22357.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175235-60094.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175236-17855.gif)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175224-16196.gif)
(1)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175225-68643.gif)
(2)若当
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175225-10039.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175225-36529.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175225-60837.gif)
(3)若关于
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175226-71244.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175226-84151.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175226-17033.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205175226-38613.gif)
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