题目
题型:解答题难度:一般来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062403-36410.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062403-30966.png)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062403-33635.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062403-33785.png)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062403-33785.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062404-66615.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062404-96741.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062404-96741.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062404-96550.png)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062404-10826.png)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062404-96550.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062403-33785.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062404-66615.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062405-58071.png)
解:(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062403-33635.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062404-96550.png)
(2)考虑
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062405-57192.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062405-33644.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062403-30966.png)
若
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062405-59074.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062405-98389.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062403-33785.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062404-66615.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062403-33785.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062406-29240.png)
若
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062406-96997.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062406-20914.png)
①若
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062406-55137.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062406-84688.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062403-33785.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062404-66615.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062403-33785.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062407-29860.png)
②若
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062407-11758.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062407-25259.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062403-33785.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062407-96301.png)
③若
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062407-81010.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062408-44173.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062403-33785.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062404-66615.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062403-33785.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062408-25757.png)
综上得,
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062404-10826.png)
核心考点
试题【已知函数()(1)若,作出函数的图象;(2)设在区间上的最小值为,求的表达式.】;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/20190819/20190819062359-57070.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062400-76466.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062400-53268.png)
A.![]() | B.![]() ![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062354-30608.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062354-86993.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062355-83345.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062355-23705.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062355-60322.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062351-77850.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062351-43201.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062351-40113.png)
(Ⅰ)求a的值;
(Ⅱ)若
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062351-17092.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062349-12715.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062346-90684.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062346-42352.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062346-87057.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819062347-41831.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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