题目
题型:单选题难度:简单来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004059-10390.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004059-35972.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004059-35972.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004100-83164.png)
A.(1, +![]() | B.(-![]() | C.[![]() | D.(1,3) |
答案
解析
试题分析:因为函数
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004059-10390.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004059-35972.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004059-35972.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004100-68814.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004100-62595.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004100-10439.png)
点评:此题是易错题,错误的主要原因是:忘记限制条件
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004101-35334.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004051-10597.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004051-31566.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004051-34149.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004051-91479.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004051-91479.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004051-25565.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004052-38872.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004042-60774.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004042-86994.png)
A.16 | B.![]() | C.4 | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004040-64253.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004040-97026.png)
A.![]() | B.[0,2] |
C.[1,+![]() | D.[0,+![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004033-69785.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004033-37039.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004030-93758.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004030-15851.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004030-49610.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818004030-31142.png)
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