满分5 >
高中数学试题 >
设U={0,1,2,3},A={x∈U|x2+mx=0},若∁UA={1,2},...
设U={0,1,2,3},A={x∈U|x2+mx=0},若∁UA={1,2},则实数m= .
考点分析:
相关试题推荐
设偶函数f(x)满足f(x)=2
x-4(x≥0),则{x|f(x-2)>0}=( )
A.{x|x<-2或x>4}
B.{x|x<0或x>4}
C.{x|x<0或x>6}
D.{x|x<-2或x>2}
查看答案
函数f(x)=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231042988830144/SYS201311012310429888301008_ST/0.png)
的定义域是( )
A.(-∞,0]
B.[0,+∞)
C.(-∞,0)
D.(-∞,+∞)
查看答案
已知函数f(x)=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231042988830144/SYS201311012310429888301007_ST/0.png)
,若f[f(0)]=4a,则实数a等于( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231042988830144/SYS201311012310429888301007_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231042988830144/SYS201311012310429888301007_ST/2.png)
C.2
D.9
查看答案
设集合A={x|0≤x<3且x∈N}的真子集的个数是( )
A.16
B.8
C.7
D.4
查看答案
下列函数式中,满足f(x+1)=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231042988830144/SYS201311012310429888301005_ST/0.png)
f(x)的是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231042988830144/SYS201311012310429888301005_ST/1.png)
(x+1)
B.x+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231042988830144/SYS201311012310429888301005_ST/2.png)
C.2
-xD.2
x
查看答案