1.x05已知全集U,集合A={1,3,5,7,9},CUA=﹛2,4,6,8,9﹜,则集合B=__.__________2.x05集合﹛a,b,d,e﹜的非空子集共有____________________个.3.x05U=Z,A=﹛x|x﹦2k,k∈z﹜,B=﹛x|x﹦2k+1,k∈z﹜,则CUA=_____________
1.x05已知全集U,集合A={1,3,5,7,9},CUA=﹛2,4,6,8,9﹜,则集合B=__.__________
2.x05集合﹛a,b,d,e﹜的非空子集共有____________________个.
3.x05U=Z,A=﹛x|x﹦2k,k∈z﹜,B=﹛x|x﹦2k+1,k∈z﹜,则CUA=____________________,CUB=____________________.
4.x05若集合A=﹛X|X²+AX-B=0﹜=﹛3,4﹜,则A=____________________,B=____________________.
5.x05满足﹛a﹜M﹛(a,b)|a²+2b-1=2a-1,a∈R,b∈R﹜的集合M的个数为
6.x05已知集合A=﹛(a,b)|a²+2b-1=2a-1,a∈R,b∈R﹜,B={(1,1/2)},则A_______________B
7.x05设集合A={-1,3,a}B={-1.a²-a+1}且BA,则a=_______________.
8.x05设全集U={2,4,x²-x+2}A={2,6-x}CUA={4}则X=_______________.
9.x05若Φ﹛x|x²≤a,a∈R﹜则实数的取值范围为_______________.
10.x05已知a=﹛x|x<-1或x>2﹜,b=﹛x|4x+a﹤0﹜当BA时,求实数a的取值范围.
11.x05设集合A=﹛-1,1﹜,集合B=﹛x|x²-2ax+b=0﹜,若B≠¢,BA,求a,b的值
12.x05已知全集U=﹛x|0﹤x﹤9﹜,A=﹛x|1﹤x﹤a﹜,若非空集合AU,求实数a的取值范围
13.x05已知全集A=﹛x|1﹤ax﹤2﹜,B=﹛x‖x|﹤1﹜满足AB,求实数a的取值范围.