设A={y|y=-4x^2-6},B={y|5x^2-y-3=0},则A∩B=?,A∪B=?
1.设A={(x,y)/4x+y=6} B={(x,y)/3x+2y=7} 则A∩B等于多少
设A=2x-3xy+y+x-3y,B=4x-6xy+2y+4x-y,若|x-3a|+(y+3)=0,且B-2A=a.求A
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=根号(3x-x^2)} B={y|y=2^x,x>1}则A∩B
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
一道数学基础题设A=(x,y) | y=-4x+6,B=(x,y) | y=5x-3 ,求A交B
设A=2x*-3xy+y*-x+2y,B=4x*-6xy+2y*-3x-y,若|x-2a|+(y+3)*=0,且B-2A
设集合A={(x,y)|y≥|x-2|,x≥0},B={(x,y)|y≤-x+b},若A∩B≠∅,(x,y)∈A∩B,且
设A={(x,y)|y=-2x+3,x,y∈R},B={(x,y)|y=(4-3m^2)x+1,x,y∈R},求A∩B≠
设集合A={(x,y)|2x+3y=5},B={(x,y)|4x+6y=13},则集合A∩B中元素的个数是?
设A,B是非空集合,定义A*B={x|x∈A∪B且x∉A∩B},已知A={x|0≤x≤3},B={y|y≥1},则A*B