已知x、y满足约束条件X+Y》0且x-y+5≥0且X《3,则Z=丨4x-y丨的最大值是?最好有图!

已知实数x,y满足约束条件x+y>3,y 已知变量x,y满足约束条件1 已知x,y满足约束条件1 已知x,y满足约束条件x-y+5>=0 x+y>=0 X 已知x,y满足约束条件：x-y+1>=0,x+y-2>=0,x 已知X,Y满足约束条件x-y+5>=0 x+y>=0 X 设X,Y满足约束条件X+Y 已知x,y满足约束条件x-4y 已知变量x,y满足约束条件｛x+y 已知x,y满足约束条件{x+y+5 已知变量x,y满足约束条件｛x+y x、y满足的约束条件0 已知变量x,y满足约束条件x+2y-3=0,y-1 已知变量x,y满足约束条件x+2y-3=0,y-1 已知x,y满足约束条件x+y==-1,y>=1 若0= 已知xy满足约束条件y=2 2X+y 已知x,y 满足约束条件y>=2|x|,x+y-1 已知实数x,y满足约束条件:x>=2 y>=2 x+y