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-1x)≥0},B={(x,y)|(x-1)2+(y-1)2≤1},则A∩B所
设x>1,y>0,若x^y+x^-y=2根号2,则x^y-x^-y等于
高中数学快1,已知平面内点M(1,2)N(0,3)设集合A={(x,y)|2x-y=0}B={(x,y)|x+2y=0}
设A={(x,y)|3x+2y=1},B={(x,y)|x-y=2},C={(x,y)|2x-2y=3},D={(x,y
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
设集合A={(X,Y)/Y=X^2+AX+2} B={(X,Y)/Y=X+1,0
设集合A={(x,y)|y=x^2+ax+2},B={(x,y)|y=x+1,0
设集合A={(x,y) / y=x平方+ax+2 } B={(x.y) / y=x+1,0
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=0},B={(x,y)|4x^2-2x-2y+5=0},C={(x,y)|y=k