2、设集合U={(x,y)|x∈R,y∈R},A={(x,y)|2x-y+m>0},B={(x,y)|x+y-n≤0},
关于充要条件的数学题设集合U={(x,y)|x∈R,y∈R},A={(x,y)|2x-y+m>0},B={(x,y)|x
设集合M={(x,y)|x^2+y^2=1.x∈R,y∈R},N={(x,y)|x-y=0,x∈R,y∈R},则集合M∩
设全集U={(x,y)|x,y属于R},集合M={(x,y)|(y+2)除以(x-2)=1},N={(x,y)|y不等于
设全集U={(x,y)|x,y属于R},集合M={(x,y)|(y-3)除以(x-2)=1},N={(x,y)|y不等于
设全集U={(x,y)|x,y x∈R },集合M={(x,y) },N={(x,y) } ,那么CU M∩CU N等于
设全集U={(x,y)|x,y∈R},集合M={(x,y)|y−3x−2=1},N={(x,y)|y≠x+1},则∁U(
设集合A={y y=x²-2x+2,x∈R},U=R,B={x -1≤x≤1}
设集合M={y|y=x²,x∈R},N={y|y=2-|x|,x∈R},则M∩N?
设全集U={(x,y)│x∈R,y∈R},集合A=={(x,y)│y-3/x-2=1},B={(x,y)|y≠x+1},
设全集U={(x,y)x∈R,y∈R},集合A={(x,y)|x-2分之y-3=1},B={(x,y)|y≠x+1},求
设集合M{Y|Y=X,X∈R},N={Y|Y=X的平方,X∈R}则集合M∩B等于
设集合M={(x,y)|x+y=1,x∈R,y∈R},N={(x,y)|x²-y=0,x,y∈R} 则集合M∩