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
若实数x,y满足x-y+1》=0,x+y>=0,x
若实数x,y满足{2x-y>=0,
实数x,y满足{x-y+1>=0;y+1>=0;x+y+1
若实数x,y满足不等式组x>=0 ,y>=0,x+2y
若实数X,Y满足X²+Y²+4X-2Y +1=0,则X²-6X+Y²-2Y的最大
已知实数x,y满足x²+y²-xy+2x-y+1=0 求x y
若实数xy满足(x+y+2)(x+y-1)=0,则x+y的值是
若实数X Y满足{X-Y+1大于等于0 X+Y大于等于0 X小于等于0则Z=X+2Y的最大值?
若实数x,y满足x^2+y^2-4x-2y+5=0,则x+y/2x-1
若实数x,y满足约束条件x-y-2=0,2y-3
已知实数x,y满足不等式组:2x-y=0,x+2y