实数x,y满足:｜x+y｜

已知实数x,y满足x-y 已知实数X,Y满足{|x+y| 实数x,y满足:｜x+y｜ 若实数x,y满足y 若实数x,y满足不等式y 已知实数x,y满足：y x,y都是实数,且满足y 若实数x,y满足x 若实数x,y满足x 已知实数x,y满足约束条件x+y>3,y 已知实数X,Y满足2 设实数x,y满足3 若实数xy满足x-y+1 已知实数xy满足x+2y 若实数x,y是满足1 设实数x,y满足3 设实数x,y满足0 已知实数x、y满足-1