x、y∈R,A={(x,y)|x^2+y^2=1},B={(x,y)|x/a - y/b=1,a>0,b>0},当A∩B只有一个元素时,a、b的关系式是()
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假设集合U={(x,y)|x∈R,y∈R },A={(x,y)|2x-y+m>0},B={(x,y)|x+y-n
A={(x,y)|y=x^2,x∈R},B={(x,y)|y=x,x∈R},求A∩B
已知集合A={x|y=x2-2x-3,x∈R},B={y|y=x2-2x-3,x∈R},C={(x,y)|y=x2-2x-3,x,y∈R}已知集合A={x|y=x2-2x-3,x∈R},B={y|y=x2-2x-3,x∈R},C={(x,y)|y=x2-2x-3,x,y∈R},D={(x,y)|(y+3)/(x-2)=1,x,y∈R}求A∩B,B∩C,C∩D
设全集U={(x,y)│x∈R,y∈R},集合A=={(x,y)│y-3/x-2=1},B={(x,y)|y≠x+1},求Cu(A∪B)
设全集U={(x,y)|x∈R,y∈R}集合A={(x,y)|(y-3)/(x-2)=1}B={(x,y)|y≠x+1}求:Cu(A∪B)
若x,y∈R,A={(x,y)|y=x},B={(x,y)|x/y=1},则A,B的关系为
设集合A={y/y=x²-2x+3,x∈R},B={y/y=-x²+2x+10,x∈R},求A∩B设集合A={(x,y)/y=x+1,x∈R},B={(x,y)/y=-x²+2x+3/4,x∈R},求A∩B
已知全集U={(x,y)|x∈R,y∈R},A={(x,y)|(y-3)/(x-2)=1,x∈R,y∈R},B={(x,y)|y≠x=1,x∈R,y∈R},求CuA∩CuBy≠x+1,不是y≠x=1
集合A={y|y=x^2+1,x∈R},B={x|y=x^2,x∈R}和C={(x,y)|y=x^2=1,x∈R}的含义分别是什么
已知集合A={y|y=x^2-2x-1,x∈R},B=y|y=x+1/x,x∈R且x不等于0}则(CRB)∩A=
若集合A={y|y=2^x,x∈R},B={y|y=-x^2+1,x∈R},则A∩B=
A={y|y=-x²+2,x∈R},B={y|y=-x+2,x∈R},则A∩B=
设集合A={y|y=x^2,x∈R},B={y|y=2-|x|,x∈R},则A∩B=
设x.y∈R+,且xy-(x+y)=1,则x+y≥?或x+y≤?或xy≤?A.x+y>=2(根号2+1)x+y
集合A={x|x=y,y∈R},B={y|y=x^2,x∈R},则A∩B=
集合A{y|y=x²-1,x∈R},B{y|y=-2x²+2,x∈R}求A∩B
已知集合A={y|y=x平方-2x-1,x∈R},B={y|y=-x平方+2x+15,x属于R},则A交B=?已知集合A={(x,y)|y=x平方-2x-1,x∈R},B={(x,y)|y=-x平方+2x+15,x属于R},则A交B=?
求f(x,y)=,max{|(x-y)/(x+2y+3)|,(x+2)/(x+2y+3),(5y+4)/(x+2y+3)}的最小值用max{a,b,c}表示a,b,c三个数中的最大值,设f(x,y)=,max{|(x-y)/(x+2y+3)|,(x+2)/(x+2y+3),(5y+4)/(x+2y+3)}(x,y∈R