题目
题型:解答题难度:简单来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053747-70961.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053747-78783.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053747-70961.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053747-70961.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053748-79179.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053748-55225.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053747-70961.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053748-78603.png)
∴对称轴为x=1.
又∵
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053747-70961.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053748-46026.png)
∵
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053748-68272.png)
即
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053749-79803.png)
(2)由条件知
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053749-55569.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053749-20144.png)
解析
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053744-16948.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053744-88199.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053744-88199.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053736-36326.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053736-21156.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053736-56855.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053737-30778.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053737-67584.png)
(1)试证明:函数
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053736-36326.png)
(2)判断
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053736-36326.png)
(3)解不等式
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053737-42958.png)
(4)试求函数
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053736-36326.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053737-94236.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053733-18628.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053733-74420.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053733-63335.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053733-18628.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053733-26571.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053734-89886.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053730-43299.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053730-52133.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053730-14218.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053730-36883.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053730-75193.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053731-96430.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053731-11390.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053731-65513.png)
A.最小值-5 | B.最大值-5 | C.最小值-1 | D.最大值-3 |
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053727-42320.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053727-19754.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053727-51796.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053727-28676.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053728-43919.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818053728-75044.png)
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