已知实数x、y满足xy>0,且8/xy+1/x+1/y=1,
已知实数x、y满足xy>0,且8/xy+1/x+1/y=1,
已知实数xy满足x/y=x-y,且y>1,则实数x的取值范围是
已知实数xy满足x²﹢y²-xy+2x-y+1=0求xy
已知x y都是实数 且满足x^2+y^2+xy=1/3,求xy的最大值
已知xy都是正实数且满足4x²+4xy+y²+2x+y-6=0则x(1-y)的最小值
已知实数xy,满足10x²-2xy+y²+6x+1=0,求x+y
已知实数x,y满足x²+y²-xy+2x-y+1=0 求x y
已知实数x,y,满足xy=1,且x>2y>0,则(x^2+4y^2)/(x-2y)的最小值是?
若x>1,y>0且满足xy=xy,xy=x
已知实数x,y满足(x2)+(y2)-xy+2x-y+1=0,求x,y的值
已知实数x、y满足X2+y2-xy+2x-y+1=0,试求x、y的值
已知XY为实数,且满足条件根号1+X-(Y-1).根号1-Y=0,试求X的2009次方-Y的2009次方