①设A={(x,y)丨y=x-3},B={(x,y)丨y=-2x},则A∪B=____.
设集合A={(x,y)|y≥|x-2|,x>=0},B ={(x,y)|y
设集合A={(x,y)/y=x^2},B={(x,y)/y=2^x},则A交B的子集个数()
设A={(x,y)|3x+2y=1},B={(x,y)|x-y=2},C={(x,y)|2x-2y=3},D={(x,y
1、设y=x+Inx,则dx/dy=() A、(x+1)/x B、(y+1)/y C、x/(x+1) D、y/(y+1)
3a(x+y)-2b(x+y)=(x+y)(?)
1.设A={(x,y)/4x+y=6} B={(x,y)/3x+2y=7} 则A∩B等于多少
设集合A={(x,y)|y>=|x-2|,x>=0},B={(x,y)|y
设U={(X,Y)}|X,Y属于R},A={(X,Y)Y-3/X-2=1},B=(X,Y)|Y=X+1},求CuA与B的
设A=2x-3xy+y+x-3y,B=4x-6xy+2y+4x-y,若|x-3a|+(y+3)=0,且B-2A=a.求A
1.设集合A={(x,y)|3x+y=1},B={(x,y)|a的平方乘以x+3y=a
设集合A={(x,y)|y≥|x-2|,x≥0},B={(x,y)|y≤-x+b},若A∩B≠∅,(x,y)∈A∩B,且
设集合A={x|y=根号(3x-x^2)} B={y|y=2^x,x>1}则A∩B