首先x^6+y^6=(x^2)^3+(y^2)^3 设a=(x^2) b=(y^2) 则,原式= a^3+b^3 =a^
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A=2x²-3xy+y²-x+2y,B=4x²-6xy+2y²-3x-y,若x
设A=2x²-3xy+y²-x+2y,B=4x²-6xy+2y²+3x-y.若x
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)|3X+2Y=1},B={(X,Y)|6X+a的平方Y+a}若A交B=空集,则a的值为多少
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A=2x^2-3xy+y^2-x+2y,B=4x^2-6xy+2y^2-3x-y.求B-2A;若|x-2a|+(y+3
设A=2x*-3xy+y*-x+2y,B=4x*-6xy+2y*-3x-y,若|x-2a|+(y+3)*=0,且B-2A
已知向量x,y,设a=2x+3y,b= --6x+3y,q=2x--1/3y.
设A=2X²-3xy+y²-x+2y,B=4x²-6xy+2y²-3x-y,若|
设A=2x²-3xy+y²-x+2y,B=4x²-6xy+2y²+3x-y 若|