题目
题型:解答题难度:简单来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141534-29221.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141534-15264.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141535-20554.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141535-66156.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141535-52739.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141535-37225.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141535-80442.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141536-27021.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141536-97934.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141536-36279.gif)
当
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141537-19274.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141537-66259.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141537-19274.gif)
当
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141535-52739.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141537-76953.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141535-52739.gif)
显然
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141538-49625.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141538-39511.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141538-14884.gif)
②得
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141538-74015.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141535-37225.gif)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141535-52739.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141535-37225.gif)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141529-17147.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141529-43150.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141529-33520.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141530-80257.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141530-44768.gif)
A.函数![]() ![]() ![]() |
B.函数![]() ![]() |
C.函数![]() ![]() |
D.函数![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141526-51652.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141526-22322.gif)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141521-66805.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141521-28565.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141521-66263.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141522-94375.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141517-10331.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141517-24543.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141517-88702.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141517-99815.gif)
在
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141517-24543.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141456-43190.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141456-67009.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141456-74018.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141457-43456.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141457-35966.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141457-20764.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141456-43190.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141456-67009.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819141457-79733.gif)
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