题目
题型:解答题难度:简单来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180055-91624.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180055-85770.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180055-55009.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180055-85770.gif)
答案
(1)
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180055-41903.gif)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180056-29697.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180056-99068.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180055-41903.gif)
(2)令
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180056-19885.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180055-55009.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180056-74540.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180056-87313.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180056-52203.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180056-74540.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180057-89472.gif)
即所求函数的值域为
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180056-29697.gif)
核心考点
举一反三
(1)
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180048-64886.gif)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180048-64810.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180037-65806.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180038-58191.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180038-44475.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180038-55769.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180038-25172.gif)
(
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180036-51978.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180036-30354.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180031-23748.gif)
A.(1,+∞) | B.(-∞,2) | C.(1,2) | D.[1,2) |
![](http://img.shitiku.com.cn/uploads/allimg/20190817/20190817180027-10662.gif)
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