题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231508-74557.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231508-34624.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231509-53193.gif)
(1)求实数
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231509-51639.gif)
(2)记
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231509-83975.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231509-97282.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231510-28565.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231509-97282.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231510-59953.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231510-28565.gif)
(2)分三种情况讨论,结合根的分布求出函数
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231510-31712.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231509-97282.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231510-59953.gif)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231458-94809.gif)
(1):求
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231458-81512.gif)
(2):当
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231458-95365.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231458-54298.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231458-46387.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231450-40463.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231451-83528.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231451-91046.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231451-40007.gif)
求
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231451-73884.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231446-15800.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231446-83806.gif)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231446-96257.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231446-64792.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231428-12422.png)
①存在闭区间
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231428-85268.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231429-86520.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231429-54465.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231429-11023.png)
②对于D内任意
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231429-77994.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231430-26428.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231430-98451.png)
则称
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231430-52036.png)
(1)判断
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231430-45391.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231430-23836.png)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231430-52036.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231431-40173.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231431-22395.png)
对一切
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231431-27685.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231432-32201.png)
(3)若
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231432-73940.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231432-86158.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231432-39046.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231419-45032.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231419-26237.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231419-63288.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231419-56028.gif)
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