题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192955-51728.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192955-35095.png)
(I) 解关于
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192956-83801.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192956-53046.png)
(II)若函数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192956-63509.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192956-55910.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192957-81591.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192957-18156.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192957-70612.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192957-31513.png)
解析
试题分析:解(1)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192958-96165.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192958-92755.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192958-97717.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192957-70612.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192958-18030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192958-86301.png)
∴不等式解集为(
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192957-18156.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192957-70612.png)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192956-63509.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192959-89331.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192959-64722.png)
设
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192959-91711.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192959-12680.png)
做出
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193000-71162.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193000-59333.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193000-71162.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192957-31513.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192956-63509.png)
图象在
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192959-89331.png)
点评:主要是考查了绝对值不等式,分段函数图像的运用,属于基础题。
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192915-45389.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192916-77070.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192916-98325.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192916-35052.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192917-65449.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192917-99941.png)
(2)c为何值时,
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192917-88454.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192823-27030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192824-82124.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192824-74902.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192824-21776.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192825-46253.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192825-41080.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192825-64696.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192825-63318.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192825-69198.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192800-69905.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192800-25944.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192801-59478.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192801-81604.png)
A.3 | B.1 | C.-1 | D.-3 |
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192741-50322.png)
(1)探索函数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192741-49209.png)
(2)是否存在实数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192741-67299.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192741-49209.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192729-16681.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192730-42333.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192730-26509.png)
(Ⅰ)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192730-35646.png)
(Ⅱ)设函数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192730-12530.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192730-42864.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192731-12540.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192730-42333.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192730-42864.png)
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