若x、y满足|x＋1|＋|y-2015|≤0,求xy的值

若x、y满足|x＋1|＋|y-2015|≤0,求xy的值 若x,y满足y 若实数x,y满足关系式log4(x＋2y)＋log4(x-2y=1,则|x|-y的最小值为? 当x,y满足条件|x|＋|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 若正数x,y满足3x＋y＝5xy,则3x＋4y的最小值 若正数x,y满足x＋3y＝5xy,则3x＋4y的最小值 若实数x,y满足x＋2y－2＝0,则3^x+9^y的最小值 已知方程组x+2y=k 2x＋y=1 的解满足x-y