题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014650-33780.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014650-18702.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014650-66503.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014651-18789.png)
.
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014651-95181.png)
解析
试题分析:由零点的定义可得:
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014651-67322.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014651-21256.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014652-76448.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014652-58146.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014652-59377.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014652-54078.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014652-13715.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014653-17088.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014653-99924.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014653-88234.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014643-97112.png)
(1).求函数f(x)的单调区间及极值;
(2).若x1≠x2满足f(x1)=f(x2),求证:x1+x2<0
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014628-53728.png)
(1)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014629-96172.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014629-55977.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014629-74664.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014629-66968.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014629-58664.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014630-39312.png)
(3)证明:当
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014630-69751.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014630-36571.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014617-93450.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014617-24563.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014618-78442.png)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014618-54603.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014618-36188.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014618-38905.png)
(2)若对任意的
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014618-99550.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014619-92369.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014619-72614.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014618-38905.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014609-16741.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014609-18362.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014609-95835.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014609-18362.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014610-23088.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014610-48843.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014610-35643.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014609-95835.png)
A.![]() | B.![]() | C.![]() | D.以上都不对 |
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019014602-79761.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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