设集合A={(x,y)|(x-4)^2+y^2=1},B={(x,y)|(x-t)^2+(y-at+2)^2=1}
设集合A={(x,y)|(x-4)^2+y^2=1},B={(x,y)|(x-t)^2+(y-at+2)^2=1}
设集合A={(x,y)|y>=|x-2|,x>=0},B={(x,y)|y
设集合A={(x,y)|y≥|x-2|,x>=0},B ={(x,y)|y
已知集合A={(x,y)| (y-3)/ (x-1)=2,x,y∈R},B={(x,y)| 4x+ay=16,x,y∈
设集合A={(x,y)|x^2-y^2/36=1},B={(x,y)|y=3^x }A∩B的子集个数是
设集合A={(x,y)|(x-4)2+y2=1},B={(x,y)|(x-t)2+(y-at+2)2=1},如果命题“∃
设x,y∈R,集合A={(x,y)|x^2-y^2=1},B={(x,y)|y=t(x-1)+2},若A∩B为单元集素,
设集合A={x//x-2/≤2,x∈R},B={y/y=-x^2,-1
设集合A={(X,Y) / ay²-x-1=0},B={(x,y) / 4x²+2x-2y+5=0}
设x,y∈R,集合A={(x,y)|x²-y=1},B={(x,y)y=t(x+2)+3},若A∩B中只有一个
设集合A={(x,y)|y^2-x-1=0},B={(x,y)|4x^2-2x-2y+5=0},C={(x,y)|y=k
设集合A={(x,y)|y^2=x+1}B={(x,y)|2y=4x^2+2x+5},C={(x,y)|y=kx+6}问