满分5 >
高中数学试题 >
若函数f(x)是定义在R上的偶函数,在(-∞,0]上是减函数,且f(2)=0,则...
若函数f(x)是定义在R上的偶函数,在(-∞,0]上是减函数,且f(2)=0,则使得f(x)<0的x的取值范围是( )
A.(-∞,2)
B.(2,+∞)
C.(-∞,-2)∪(2,+∞)
D.(-2,2)
考点分析:
相关试题推荐
设函数f(x)定义在实数集上,它的图象关于直线x=1对称,且当x≥1时,f(x)=lnx-x,则有( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231127065685722/SYS201311012311270656857005_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231127065685722/SYS201311012311270656857005_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231127065685722/SYS201311012311270656857005_ST/2.png)
D.
查看答案
若不等式x
2+ax+1≥0对一切
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231127065685722/SYS201311012311270656857004_ST/0.png)
成立,则a的最小值为( )
A.0
B.-2
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231127065685722/SYS201311012311270656857004_ST/1.png)
D.-3
查看答案
如果不等式f(x)=ax
2-x-c>0(a,c∈R)的解集为{x|-2<x<1},那么函数y=f(-x)的大致图象是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231127065685722/SYS201311012311270656857003_ST/images0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231127065685722/SYS201311012311270656857003_ST/images1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231127065685722/SYS201311012311270656857003_ST/images2.png)
D.
查看答案
函数
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231127065685722/SYS201311012311270656857002_ST/0.png)
的值域是( )
A.(-∞,2]
B.[1,2]
C.[1,3]
D.[2,+∞)
查看答案
下列各组函数中,表示同一函数的是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231127065685722/SYS201311012311270656857001_ST/0.png)
与y=x-1
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231127065685722/SYS201311012311270656857001_ST/1.png)
与
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231127065685722/SYS201311012311270656857001_ST/2.png)
C.y=x
与
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231127065685722/SYS201311012311270656857001_ST/3.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231127065685722/SYS201311012311270656857001_ST/4.png)
与y=
查看答案