已知实数xy满足 4x+y-9>=0 x-y-1
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x²+y²-xy+2x-y+1=0 求x y
已知实数xy满足方程x^2+y^2-4x+1=0求y比x的最小值
已知实数xy满足x²﹢y²-xy+2x-y+1=0求xy
已知实数xy,满足10x²-2xy+y²+6x+1=0,求x+y
已知实数x、y满足5x²-3xy+1/2y²-2x+1/2y+1/4=0 求x、y的值
已知实数x,y满足5x^2-3xy+1\2y^2-2x+1\2y+1\4=0,求x,y的值
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?
已知实数xy满足x^2+y^2-6x+4y+13=0求x^y的值
已知实数XY满足x^2+y^2+2x+4y-20=0求 y/x
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x,y满足(x2)+(y2)-xy+2x-y+1=0,求x,y的值