满分5 >
高中数学试题 >
函数f(x)=|x-a|在区间[1,+∞)上为增函数,则a取值范围是 .
函数f(x)=|x-a|在区间[1,+∞)上为增函数,则a取值范围是 .
考点分析:
相关试题推荐
对a,b∈R,记max{a,b}=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225251804579632/SYS201311012252518045796009_ST/0.png)
,函数f(x)=max{|x+1|,|x-2|}(x∈R)的最小值是( )
A.0
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225251804579632/SYS201311012252518045796009_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225251804579632/SYS201311012252518045796009_ST/2.png)
D.3
查看答案
函数
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225251804579632/SYS201311012252518045796008_ST/0.png)
的定义域是( )
A.(-∞,1]
B.(-∞,0)∪(0,1]
C.(-∞,0)∪(0,1)
D.[1,+∞)
查看答案
函数y=f(x)在[0,2]上单调递增,且函数f(x+2)是偶函数,则下列结论成立的是( )
A.f(1)<f(
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225251804579632/SYS201311012252518045796007_ST/0.png)
)<f(
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225251804579632/SYS201311012252518045796007_ST/1.png)
)
B.f(
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225251804579632/SYS201311012252518045796007_ST/2.png)
)<f(1)<f(
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225251804579632/SYS201311012252518045796007_ST/3.png)
)
C.f(
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225251804579632/SYS201311012252518045796007_ST/4.png)
)<f(
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225251804579632/SYS201311012252518045796007_ST/5.png)
)<f(1)
D.f(
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225251804579632/SYS201311012252518045796007_ST/6.png)
)<f(1)<f(
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225251804579632/SYS201311012252518045796007_ST/7.png)
)
查看答案
使x
2-x-a
2+a+1>0对任意实数x成立,则( )
A.-1<a<1
B.0<a<2
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225251804579632/SYS201311012252518045796006_ST/0.png)
D.
查看答案
设f(x)是R上的任意函数,则下列叙述正确的是( )
A.f(x)f(-x)是奇函数
B.f(x)|f(-x)|是奇函数
C.f(x)-f(-x)是偶函数
D.f(x)+f(-x)是偶函数
查看答案