A={(x,y)|x=2},B={(x,y)|y=3},求A∩B和AUB
集合A={y|y=X2+2x+3} B={y|y=x+4/x} 则AUB=________
随机X、Y同分布,概率密度f(x)={3(x^2)/8 ,0a ,A、B相互独立,且P{AUB}=3/4 ,求a
已知:A=X*X-3xy+y*y,B=2x*x+xy-3y*3y.求A+B,A-B,A+2B
1.已知集合A={(x,y)|y=2x+1},B={(x,y)|y=x+3},a∈A,b∈B,求a
若集合A={(x,y)|x+2y=3},B={(x,y)|2x-y=1},求A∩B
已知集合A={(x,y)|2x+3y=6},B={(x,y)|x-2y=-4},求A∩B,
已知集合A={(x,y)|3x-7y=-5},B={(x,y)|2x+9y=40},求A∩B(用列举
A={y|y=-4x+6},B={x|y=5x-3},求A∩B.
若A{(X,Y)|Y=x2-2},B{(X,Y)|X=Y2-2},求A∩B
已知集合A={(x,y)|2x-y=0},B={(x,y)|3x+y=0},C={(x,y)|2x-y=3}求A∩B,A
x²(x+y)(y-x)-xy(x+y)(x-y) 已知a+b=4,ab=-2,求多项式3a²b+3
已知集合A={(x,y)/2x—y=0},B={(x,y)/3x+y=0 }.C={(x,Y)/2x-y=3},求A∩B