【题文】设,则满足的的值为( )A.2B.3C.2或3D.
【题文】设,则满足的的值为( )A.2B.3C.2或3D.
题型:难度:来源:
【题文】设
![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325040755-41302.png)
,则满足
![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325040756-32020.png)
的
![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325040756-58934.png)
的值为( )
A.2 | B.3 | C.2或3 | D.![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325040756-80983.png) |
答案
【答案】C.
解析
【解析】
试题分析:由题意
![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325040756-45637.png)
或
![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325040756-61113.png)
.
考点:分段函数.
举一反三
【题文】设
![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325040736-11169.png)
,则满足
![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325040737-28258.png)
的
![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325040737-76603.png)
的值为( )
A.2 | B.3 | C.2或3 | D.![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325040737-34702.png) |
【题文】已知f(x)=
![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325040731-68530.png)
,则f(2)等于
【题文】已知f(x)=
![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325040720-49721.png)
,则f(2)等于
【题文】设
![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325040701-16828.png)
,则
【题文】设
![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325040630-45116.png)
,则
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