题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041950-78373.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041950-13480.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041951-66256.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041951-62104.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041950-78373.png)
①
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041951-82340.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041951-50129.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041952-78010.png)
其中存在“稳定区间”的函数有 ____(填上所有正确的序号)
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041950-78373.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041950-78373.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041952-49867.png)
核心考点
试题【对于函数,若存在区间,使得,则称区间为函数的一个“稳定区间”.给出下列3个函数:①; ②; ③.其中存在“稳定区间”的函数有 ____(填上所有】;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/20200205/20200205041901-11992.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041901-39968.png)
(1)设直线
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041902-86650.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041902-11861.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041902-53949.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041902-42878.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041902-11861.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041902-67943.png)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041903-18495.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041903-93440.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041903-58232.png)
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![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041903-25858.png)
(3)在(2)的条件下且当
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041902-67943.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041903-25858.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041904-52562.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041904-12467.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041904-20445.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041904-16893.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041904-19220.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041848-80166.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041848-13041.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041848-94579.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041848-17035.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041849-21262.png)
取值范围.
(Ⅱ)已知实数
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041849-24628.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041849-92037.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041849-11277.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041849-12550.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041755-88971.png)
(Ⅰ)当
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041755-32194.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041755-77516.png)
(Ⅱ)对任意的实数
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041755-14478.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041756-70496.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041756-27203.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041756-76811.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041718-95535.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041718-76229.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041719-21463.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041655-55525.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041655-51987.png)
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![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041656-97966.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205041656-83921.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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