已知实数x,y满足y=-x^2,若0

已知实数x,y满足{x=>0,y 已知实数x,y满足{x=>0,y 已知实数x,y满足不等式组：2x-y=0,x+2y 已知实数x,y满足y=|x-1|若x+2y 已知实数x,y满足y=-x^2,若0 已知实数x,y满足x-ay-1>=0,2x+y>=0,x 已知实数x, y满足x²+y²-2x+6y+10=0,求y∧-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-y 已知实数X,Y满足{|x+y| 若实数x,y满足不等式组x>=0 ,y>=0,x+2y 若实数x,y满足x^2-xy-y^2 =0,则x/y=? 已知实数X,Y满足2 已知实数xy满足x+2y 已知实数xy满足 x+y-2 已知实数x,y满足 2x+y-2>=0,x-2y+k>=0,x-1 已知实数x,y满足不等式2x-y>=0,x+y-4>=0,x 已知实数x,y满足不等式2x-y>=0,x+y-4>=0,x