实数x,y满足{x-y+1>=0;y+1>=0;x+y+1

实数x,y满足{x-y+1>=0;y+1>=0;x+y+1 若实数x,y满足x-y+1>=0,x+y>=0,x 若实数x,y满足x-y+1》=0,x+y>=0,x 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x×x+y×y-xy+2x-y+1=0 试求x y的值 若实数X,Y满足X²+Y²+4X-2Y +1=0,则X²-6X+Y²-2Y的最大 实数X.Y满足X*X+Y*Y-2X-2Y+1=0,则（Y-4）/（X-2）的取值范围是? 已知实数x,y满足 2x+y-2>=0,x-2y+k>=0,x-1 x>1,y>0,且满足xy=x^y,x/y=x^3y,求x+y 已知实数x,y满足方程x*x+y*y-4x+1=0.求y-x的最大值 若实数x,y满足{2x-y>=0, 1已知实数x y满足x^2+y^2+2x-2√3y=0 求