题目
题型:解答题难度:一般来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063544-78591.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063545-37642.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063545-76224.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063545-79479.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063545-32759.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063545-31676.gif)
(Ⅰ)求
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063546-95819.gif)
(Ⅱ)判断
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063544-78591.gif)
(Ⅲ)若
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063546-61719.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063546-57340.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063544-78591.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063546-95819.gif)
(Ⅱ)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063546-20871.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063546-67483.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063544-78591.gif)
(Ⅲ)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063547-36527.gif)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063547-31817.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063547-10576.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063547-66058.gif)
核心考点
试题【已知函数的定义域为R,且满足以下条件:1对任意的,有;2对任意有;3(Ⅰ)求的值;(Ⅱ)判断 的单调性,并说明理由;(Ⅲ)若 且a,b,c成等比数列,求证:.】;主要考察你对函数的单调性与最值等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063536-86231.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063536-68200.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063536-76467.gif)
(1)对于函数
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063536-86231.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063537-45698.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063537-14244.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063537-63010.gif)
(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063537-15314.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063537-57400.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063538-16186.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063530-78121.gif)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063531-12073.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063531-12073.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063531-22505.gif)
(3)若
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063531-33537.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063531-59164.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063531-76835.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063531-17611.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063525-46057.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063525-92930.gif)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063525-19102.gif)
(2)求
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063525-19102.gif)
(3)若方程
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063525-89109.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063517-75706.gif)
(Ⅰ)求
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063517-65266.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063517-16727.gif)
(Ⅱ)若
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063518-43599.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063518-78514.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063518-26015.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063514-57521.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818063514-47171.gif)
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