设A={(x,y)|y=x-2},B={(x,y)|y/x-2=1},则CaB={?},讲解一下最好了,
设x>1,y>0,若x^y+x^-y=2根号2,则x^y-x^-y等于
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={x|y=根号(3x-x^2)} B={y|y=2^x,x>1}则A∩B
设A={(x,y)}|3x+2y|.
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)
设集合A={(x,y)/y=x^2},B={(x,y)/y=2^x},则A交B的子集个数()
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)|x^2-y^2/36=1},B={(x,y)|y=3^x }A∩B的子集个数是
设Z=X+Y,其中X,Y满足X+2Y>=0,X-Y