题目
题型:单选题难度:一般来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024800-78930.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024800-53236.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024800-21003.jpg)
A.![]() | B.![]() | C.![]() | D.![]() |
答案
解析
试题分析:观察二次函数的图象可知,
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024801-97896.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024800-78930.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024801-86866.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024802-11205.png)
所以,
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024802-41403.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024802-23707.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024802-27125.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024800-53236.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024801-87445.png)
故选B.
核心考点
试题【如图是二次函数的部分图象,则函数的零点所在的区间是( )A.B.C.D.】;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/20190819/20190819024757-93720.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024757-87579.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024757-19165.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024753-39904.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024754-75911.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024754-76930.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024750-12597.png)
(1) 求
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024750-12597.png)
(2) 若
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024750-99964.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024735-52423.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024735-36043.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024735-51415.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024735-52423.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024736-94397.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024735-52423.png)
(2)设函数
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024735-52423.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024736-20616.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024736-52418.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024736-52418.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024728-58336.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024728-18904.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024728-96081.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024728-76021.png)
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