设:X,Y满足以下X-Y+2>=05X-Y-10=0Y>=0则Z=2X+Y的最大值是多少?

设:X,Y满足以下X-Y+2>=05X-Y-10=0Y>=0则Z=2X+Y的最大值是多少? 设x,y满足约束条件x+y>=1,x-y>=-1,2x-y 设x,y满足约束条件x+y>=1,x-y>=-1,2x-y 设Z=X+Y,其中X,Y满足X+2Y>=0,X-Y 设实数x,y满足 x>=0 x-2y>=0 x-y-2 设实数x,y满足约束条件：x>=2;y>=x;2x+y 设x,y满足约束条件x>=0 x>=y 2x-y 设变量x,y满足x+y 设X,Y满足约束条件X+Y 设变量X,Y满足约束条件{X-Y+3>=0,X+Y>=0,-2 设变量x,y满足约束条件:x-y+3>=0 x+y>=0 -2 设z=2x+y式中变量x,y同时满足x-4y 设变量x.y满足条件3x+2y 设实数X,Y满足2X+Y-2>=0,X-2Y+4>=0,3X-Y 设X,Y满足条件x-y+2>=0,x+y-4>=0,2x-y-5 设Z=x+y,其中实数x,y满足不等式x+2y>=0,x-y 设z=x+y,其中实数x,y满足{x+2y>=0,x-y 设实数x,y 满足x²+4y²+2x-4y+2+0 则x+y=