题目
题型:解答题难度:简单来源:不详
已知函数
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065801-54594.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065801-51414.gif)
(1)若不等式
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065801-54900.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065801-73448.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065802-91671.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065802-33153.gif)
(2)在(1)的条件下, 当
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065802-56499.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065802-69881.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065802-82207.gif)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065802-17463.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065803-90438.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065803-35607.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065801-73448.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065802-91671.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065803-43634.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065803-93566.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065803-97561.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065804-92369.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065804-45480.gif)
因此,
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065802-82207.gif)
(2) 则
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065804-52406.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065804-21023.gif)
当
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065804-34489.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065805-94462.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065802-17463.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065803-90438.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065805-54811.gif)
核心考点
试题【(本小题满分10分)已知函数(1)若不等式的解集为或,求的表达式;(2)在(1)的条件下, 当时, 是单调函数, 求实数k的取值范围.】;主要考察你对一次函数的图象和性质等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065753-67187.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065753-98006.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065753-55708.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065753-66375.gif)
(1) 求
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065753-55708.gif)
(2) 设直线
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065753-66709.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065754-54060.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065753-55708.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065754-76157.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065754-51574.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065754-54060.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065753-55708.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065754-64619.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065754-62937.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065755-13968.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065755-30587.gif)
(3)已知
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065755-26955.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065755-75971.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065748-37955.gif)
(1)求证
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065748-45293.gif)
(2)函数
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065748-40217.gif)
(3)设
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065749-48747.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065749-23862.gif)
若
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065745-79740.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065745-62404.gif)
A.![]() | B.![]() |
C.![]() | D.![]() |
已知函数
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065738-89600.gif)
(1)由函数
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065739-34096.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065739-91039.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065739-91039.gif)
(2)若存在实数
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065739-43922.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065739-58798.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065739-14780.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065736-14986.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065737-43908.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065737-63240.gif)
A.![]() | B.![]() | C.![]() | D.![]() |
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