设a={(x,y)丨y2-x-1=0}B={(x,y)丨4x2+2x-2y+5=0}C={(x,y)丨y=kx+b}是否
设A={(x,y)|y^2-x-1=0},B={(x,y}|4x^2+2x-2y+5=0),C={(x,y)|y=kx+
设A={(x,y)│y^2-x-1=0},B={(x,y)│4x^2+2x-2y+5=0},C={(x,y)│ y=kx
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
若A{(X,Y)|Y=x2-2},B{(X,Y)|X=Y2-2},求A∩B
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A=2x2-3xy+y2+x-3y,B=4x2-6xy+2y2+4x-y,若|x-3a|+(y+3)2=0,且B-2A
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
已知圆C:x2+y2-2x-4y-3=0,直线l:y=x+b.
设平面点集A={(x,y)|(y-x)(y-1/x)>=0},B={(x,y)|(x-1)^2+(y-1)^2
设集合A={y|y=x2+2x+4,x R},B={y|y= x2-4x+3,x R},给出下列结论:
如图所示,已知一次函数y=kx+b(b>0)与二次函数y=1/2x^2;相交于A(x1,y1),B(x2,y2)