题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143426-50626.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143426-12355.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143426-28072.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143426-10439.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143427-92900.png)
(1)设
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143427-55692.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143427-46754.png)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143427-87392.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143427-57901.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143428-14319.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143428-38204.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143428-42273.png)
解析
试题分析:(1)当
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143428-85826.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143429-52922.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143429-60068.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143427-87392.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143429-33849.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143429-43539.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143429-46378.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143428-14319.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143426-12355.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143430-75767.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143430-92802.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143430-27386.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143430-36850.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143430-15309.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143430-64190.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143431-72278.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143431-52865.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143431-89438.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143431-18042.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143431-84534.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143432-49391.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143428-38204.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143403-80078.png)
(Ⅰ)求
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143403-76313.png)
(Ⅱ)用函数单调性的定义证明函数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143404-25438.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143404-11522.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143338-12464.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143338-12464.png)
(Ⅰ)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143338-94944.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143339-19353.png)
(Ⅱ)函数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143339-89269.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143339-95452.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143339-57270.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143252-32184.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143252-92254.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143252-92254.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143252-32184.png)
例如:
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143252-87131.png)
(Ⅰ)判断下列函数:①
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143252-10157.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143253-21419.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143253-63660.png)
(Ⅱ)判断函数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143253-37256.png)
(Ⅲ)证明:对于任意实数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143253-32958.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143254-70663.png)
(注:“
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143254-38294.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143254-97350.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143237-50802.png)
(Ⅰ)若
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143237-53322.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143237-27060.png)
(Ⅱ) 当
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143238-39438.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143237-27060.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143238-56124.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143238-27902.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143238-97090.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143228-88029.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143229-74195.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143229-33864.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143229-98102.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204143229-36612.png)
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