满分5 >
高中数学试题 >
点(a,b)在映射f的作用下的象是(a-b,a+b),则f的作用下点(3,1)的...
点(a,b)在映射f的作用下的象是(a-b,a+b),则f的作用下点(3,1)的原象为 .
考点分析:
相关试题推荐
对于集合M、N,定义M-N={x|x∈M,且x∉N},M⊕N=(M-N)∪(N-M).设A={y|y=x
2-3x,x∈R},B={y|y=-2
x,x∈R},则A⊕B=( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100606571090739/SYS201311031006065710907011_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100606571090739/SYS201311031006065710907011_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100606571090739/SYS201311031006065710907011_ST/2.png)
D.
查看答案
当a≠0时,y=ax+b和y=b
ax的图象只可能是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100606571090739/SYS201311031006065710907010_ST/images0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100606571090739/SYS201311031006065710907010_ST/images1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100606571090739/SYS201311031006065710907010_ST/images2.png)
D.
查看答案
对于任意实数x,设函数f(x)是2-x和x的较小者,则f(x)的最大值是( )
A.-2
B.-1
C.1
D.2
查看答案
函数f(x)=e
x+x-2的零点所在的一个区间是( )
A.(-2,-1)
B.(-1,0)
C.(0,1)
D.(1,2)
查看答案
设奇函数f(x)的定义域为[-5,5],若当x∈[0,5]时,f(x)的图象如图,则不等式f(x)≤0的解集为( )
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100606571090739/SYS201311031006065710907007_ST/images0.png)
A.[-5,-2]∪[2,5]
B.[-2,0]∪[2,5]
C.[-2,2]
D.[-5,-2]∪[0,2]
查看答案