从集合{(x,y)|x²+y²≤4,x∈R,y∈R}内任选一个元素(x,y),则x,y满足x+y≥2
从集合{(x,y)|x²+y²≤4,x∈R,y∈R}内任选一个元素(x,y),则x,y满足x+y≥2
从集合{(x,y)|x2+y2≤4,x∈R,y∈R}内任选一个元素(x,y),则x,y满足x+y≥2的概率为______
从集合{(x,y)|x^2+y^2≤4,x∈R,y∈R}中任选一个元素(x,y),求x,y满足x+y≥2的概率
已知集合A={(x,y)|x²+y²≤1.x.y∈R},B={(x,y)||x|+|y|≤2.x.y
若全集I={(x,y)|x,y∈R},集合M={(x,y)|(y-3)/(x-2)},N{(x,y)|y=x=1},则(
设集合M={y|y=x²,x∈R},N={y|y=2-|x|,x∈R},则M∩N?
已知x,y∈R,满足2≤y≤4-x,x≥1,则x
已知集合A={(x,y)|(y-2)/(x-1)=a+2,x,y∈R},B={(x,y)|(a²-4)x+(a
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∩
已知集合M={y|y=2^x,x∈R},集合N={y|y=x²,x∈R},求M∩N
已知集合A={(x,y)| (y-3)/ (x-1)=2,x,y∈R},B={(x,y)| 4x+ay=16,x,y∈
设x,y∈R,则满足条件x+2y≥0,x-3y-5≤0.x^2+y^2-4x+2y-4≤0的点p(x,y)所在的平面区域