设全集U={-2,-1,0,1,2,3},子集A={2,a,a+4} B={0,a+b,b}如果3∈A∩B,则Cu(A∪B)___________

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设全集U={-2,-1,0,1,2,3},子集A={2,a,a+4}B={0,a+b,b}如果3∈A∩B,则Cu(A∪B)___________设全集U={-2,-1,0,1,2,3},子集A={2,

设全集U={-2,-1,0,1,2,3},子集A={2,a,a+4} B={0,a+b,b}如果3∈A∩B,则Cu(A∪B)___________
设全集U={-2,-1,0,1,2,3},子集A={2,a,a+4} B={0,a+b,b}如果3∈A∩B,则Cu(A∪B)___________

设全集U={-2,-1,0,1,2,3},子集A={2,a,a+4} B={0,a+b,b}如果3∈A∩B,则Cu(A∪B)___________
a=-1 b=3
A={2,-1,3}
B={0,2,3}
Cu(A∪B)={1,-2}