设集合A={5,log2(a+3)},B={a,b}.若A∩B={1},则A∪B=______.
设集合A={5,log2(a+3)},B={a,b}.若A∩B={1},则A∪B=______.
设集合A={5,log2(a2-3a+6)},集合B={1,a,b},若A∩B={2},则集合A∪B的真子集的个数是(
设集合A={4,log2(a+3)},集合B={a,b},若A交B={2},则A并B等于
设集合A={5,log2(a+3)},集合B={a,b},若A∩B={2},则A∪B等于多少?log...
集合A={3,log2 a},B={a b},若A交B={2},则B=
若实数a,b满足log2(a-2)+log2(2b-2)=3,则a+b的最小值是______.
设集合A{1,2,3,4},B{3,4,5},则A∩B= ,A∪B=
设集合A={-1,1,3},B={a+2,a2+4},A∩B={3},则实数a=______.
设a,b∈R,集合{1,a+b,a}={0,b/a,b},则b-a=?
设f:x→|x|是集合A到集合B的映射.若A={-2,0,2},则A∩B=______.
设A,B为集合,证明如果(A-B)∪(B-A)=A∪B,则A∩B=空集
设集合A={|a+1|,3,5},集合B={2a+1,a平方+2a a平方+2a-1},若A∩B={2,3},求A∪B