1. 设A={(x,y)}|x∈M,y ∈n},B={(x,y)|x∈N,y∈M},求A∩B,A∪B.
2.设A={x|x=2^n,n∈n+},B={x|x=2n,n∈N},求A∩B,A∪B.
3.设全集U={1,2,3,4,5,6},集合A{x|x^2-5x+a=0},B={x|x^2+bx+12=o},以知(CUA)UB={1,2,4,5,6},求实数a,b的值.
1. 设A={(x,y)}|x∈M,y ∈n},B={(x,y)|x∈N,y∈M},求A∩B,A∪B.
2.设A={x|x=2^n,n∈n+},B={x|x=2n,n∈N},求A∩B,A∪B.
3.设全集U={1,2,3,4,5,6},集合A{x|x^2-5x+a=0},B={x|x^2+bx+12=o},以知(CUA)UB={1,2,4,5,6},求实数a,b的值.