满足｜X ｜+｜Y｜

满足｜X ｜+｜Y｜ 已知x,y满足y 若x,y满足y y满足条件【x-y 已知实数x,y满足x-y 设变量x,y满足x+y 设X,Y满足约束条件X+Y 当x,y满足条件|x|+|y| 已知实数X,Y满足{|x+y| 当x,y满足条件|x|+|y| 实数x,y满足:｜x+y｜ 满足3x+4y 若x,y满足：0 若x、y满足0 感激不尽1.x,y满足(x-y-1)(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