题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053927-67343.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053927-70439.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053927-99833.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053927-63183.png)
A.![]() | B.![]() | C.![]() | D.![]() |
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053927-99833.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053927-63183.png)
当x>0时,
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053928-16142.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053929-24392.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053929-80732.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053929-10777.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053929-24392.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053929-21653.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053928-81202.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053920-56075.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053921-42391.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053921-31227.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053921-24336.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053921-48249.png)
1)令
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053921-37372.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053922-75150.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053922-37627.png)
2)若总存在实数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053922-18136.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053922-33440.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053923-42813.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053923-66712.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053910-51492.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053910-88561.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053910-54073.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053910-72224.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053911-42248.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053859-33150.png)
(1)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053859-70863.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053900-68499.png)
(文科(3)证明:
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053900-17920.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053900-21595.png)
(理科(3)证明:
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053900-77553.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053900-21595.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053849-18250.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053850-74367.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053850-75091.png)
(1)试确定常数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053850-26019.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053850-55176.png)
(2)试判断
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053851-67002.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053851-89331.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053845-63846.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018053845-61996.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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