题目
题型:单选题难度:一般来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201146-94504.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201146-74308.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
答案
解析
设
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201147-78772.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201147-50303.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201147-54214.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201147-13135.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201148-11897.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201147-50303.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201148-66270.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201148-37079.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201148-94128.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201144-45268.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201144-55842.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201144-44849.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201144-72768.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201144-72258.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201143-59962.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201143-84898.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201143-24312.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201143-24863.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201143-56965.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201143-72243.png)
的解集为
A.(![]() | B.(![]() ![]() | C.(![]() ![]() | D.(![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201139-20591.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201139-12628.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201139-57022.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201139-82318.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201139-20591.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201140-15458.png)
则
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201140-55572.png)
A.2+![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201138-55517.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201138-44525.gif)
设函数
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201136-34213.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201136-34213.gif)
(I)求a,b的值;
(II)证明:
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819201136-34213.gif)
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