A={(x,y)|x^2+y^2=1}B={(x,y)|x+y=1}则A交B的元素个数为

A={(X,Y)|X+Y>=1},B={(X,y)|X^2+y^2=1},B={(X,y)|X^2+y^2 A={(x,y)|y=-x^2+mx-1},B={(x,y)|y=3-x,0A={(x,y)|y=-x^2+mx-1},B={(x,y)|y=3-x,0 集合A={（x,y)|y=-x^2+mx-1},B={(x,y)|y=3-x,0 若集合A={(x,y)|y>=|x-2|} ,B={(x,y)|y A={（x,y)|y>=0.5|x-2|},B={(x,y)|y 1、(-y^3)^5/y^3/ y^2+2(-y)^102、(x-y)^7/(y-x)^6+(x+y)^3/(x+y)^23、已知X^a=5,x^b=3,求X^(3a-2b)的值 已知x+y=a,2x-y=-2a,求[（x/y-y/x)/(x+y)-x(1/x-1/y)]/[(x+1)/y]的值 已知集合A={x+y|y=x^2,x属于R},B={y|y=1-|x|,x属于B},求A∩B. 已知x属于R,y>0,集合A={x|x*x+x+1,-x,-x-1},集合B={-y,-y/2,y+1}若A=B,则x*x+y*y的值为 已知集合A={x,y|x^2+y^2=1},B={(x,y)|kx-y 已知集合A={(x,y)|x+y=1},B={(x,y)|kx-y-2 集合A={(x,y)|x-2y=1}B={(x,y)|x+3y=6},则A∩B= A∪B=? 已知A={(X,Y)|y=2x^2-1},B={(x,y)|y=-x^2-x+1},求A交集B.急! A={y|y=(x-1)^2,x≤0},B={y|y=x^2-x+1,x∈R},A与B关系 设集合A={x|x=y^2-2y-8},B={x|y=-x^2+2x+3},C={y|y+1 设平面点集A={(x,y)|(y-x)(y-1/x)>=0},B={(x,y)|(x-1)^2+(y-1)^2 设平面点集A={(x,y)|(y-x)(y-1/x)>=0},B={(x,y)|(x-1)^2+(y-1)^2 设平面点集A={(x,y)|(y-x)(y-1/x)>=0},B={(x,y)|(x-1)^2+(y-1)^2