1、若x、y满足｜x+1|+｜y－2013|小于等于0,求xy的值 2、已知lm-2013l与（n1、若x、y满足｜x+1|+｜y－2013|小于等于0,求xy的值2、已知lm-2013l与（n-2014)2互为相反数,求（m-n)20l3的值

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x,y满足x｜x｜－y｜y｜＝1,则点(x,y)到直线y=x的距离的取值范围是 若x,y满足y 若实数xy满足x-y+1 若实数x,y是满足1 已知x,y满足{x>=1,x+y 已知x,y满足{x>=1,x+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 若实数x,y满足不等式x-y>=-1,x+y>=1,3x-y 若实数x,y满足不等式x-y>=-1,x+y>=1,3x-y 若正实数x,y满足x+y+1/x+1/y=5,则x+y的最大值是多少