若x、y满足|x+1|+|y-2013|≤0,求xy的值

若x,y满足y 感激不尽1.x,y满足(x-y-1)(x+y) 若实数x,y满足x-y+1》=0,x+y>=0,x 若变量x,y满足约束条件{x>=-1;y>=x;3x+2y 若实数x,y满足x-y+1>=0,x+y>=0,x 若实数xy满足x-y+1 若实数x,y是满足1 若x,y满足：0 若x、y满足0 若实数x,y满足y 若实数x,y满足不等式y 若实数x,y满足x>=1,y>=1,x+y 若x,y 满足条件{x>=1 y>=1 x+y-3 若x,y满足根号4x-5y+根号x-y-1 若正数x,y满足xy-(x+y)=1,则x+y的最小值是 已知实数x,y满足y=|x-1|若x+2y 若x、y满足|x+1|+|y-2013|≤0,求xy的值 若x.y,满足x+1的绝对值+y-2013的绝对值＜或=0,