满分5 >
高中数学试题 >
设f(x)=|2-x2|,若0<a<b,且f(a)=f(b),则ab的取值范围是...
设f(x)=|2-x2|,若0<a<b,且f(a)=f(b),则ab的取值范围是( )
A.(0,2)
B.(0,2]
C.(0,4]
D.(0,4)
考点分析:
相关试题推荐
设函数f(x)=x
3+ax
2+(a+6)x+1,既有极大值又有极小值,则实数a的取值范围( )
A.a>6或a<-3
B.-3<a<6
C.a≥6或a≤-3
D.-3≤a≤6
查看答案
定义运算:
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527888757370/SYS201311012315278887573003_ST/0.png)
,则函数f(x)=1⊗2
x的图象是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527888757370/SYS201311012315278887573003_ST/images1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527888757370/SYS201311012315278887573003_ST/images2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527888757370/SYS201311012315278887573003_ST/images3.png)
D.
查看答案
若函数f(x)=ax+b的零点为2,那么函数g(x)=bx
2-ax的零点是( )
A.0,2
B.0,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527888757370/SYS201311012315278887573002_ST/0.png)
C.0,-
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527888757370/SYS201311012315278887573002_ST/1.png)
D.2,
查看答案
若集合A={1,m
2},B={2,4},则“m=2”是“A∩B={4}”的( )
A.充要条件
B.必要不充分条件
C.充分不必要条件
D.既不充分也不必要条件
查看答案
已知全集U={1,2,3,4,5},集合A={x∈Z||x-3|<2},则集合C
uA等于( )
A.{1,2,3,4}
B.{2,3,4}
C.{1,5}
D.{5}Z
查看答案