【题文】若则的值为 ____ .
【题文】若则的值为 ____ .
题型:难度:来源:
【题文】若
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330104550-13766.png)
则
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330104551-19402.png)
的值为
____ .
答案
【答案】2.
解析
【解析】
试题分析:因为
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330104551-53038.png)
,所以
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330104551-82697.png)
,故答案为:2.
考点:分段函数值的求法.
举一反三
【题文】函数
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330104517-39552.png)
定义域为
.
【题文】函数
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330104504-34248.png)
=
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330104504-80972.png)
的值域为
.
【题文】已知函数
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330104446-76389.png)
,则不等式
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330104446-41506.png)
的解集为
.
【题文】若当
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330104441-35605.png)
时,函数
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330104441-25984.png)
始终满足
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330104442-50956.png)
,则函数
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330104442-78286.png)
的图象大致为( )
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330104442-92448.png)
【题文】函数
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330104429-64146.png)
(其中
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330104429-21631.png)
且
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330104429-92414.png)
)的图像恒过定点
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330104430-41248.png)
,若点
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330104430-41248.png)
在直线
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330104430-91889.png)
上,其中
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330104430-99622.png)
,则
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330104430-62801.png)
的最小值为
.
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