【题文】已知函数,则的值是A.B.C.4D.9
【题文】已知函数,则的值是A.B.C.4D.9
题型:难度:来源:
答案
【答案】A
解析
举一反三
【题文】.已知函数
![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325085118-26062.png)
,若
![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325085118-99135.png)
互不相等,且
![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325085119-76076.png)
,则
![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325085119-14062.png)
的取值范围是( )
【题文】若函数y=log
2(x
2-mx+m)的定义域为R,则m的取值范围是
【题文】已知函数
![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325085101-97196.png)
,则
![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325085101-57131.png)
=( )
【题文】已知函数
![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325085053-45518.png)
,对任意的两个不相等的实数
![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325085053-96735.png)
,都有
![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325085054-12167.png)
成立,且
![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325085054-15078.png)
,则
![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325085054-47878.png)
的值是( )
A.![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325085054-47135.png) | B.1 | C.2006! | D.(2006!)2 |
【题文】已知
![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325085035-56386.png)
,则
![](http://img.shitiku.com.cn/uploads/allimg/20200325/20200325085035-19011.png)
为( )
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