若实数变量x,y满足约束条件x+2y>=2,2x-y=-1,则目标函数k=y+1/x+1的取值范围是

若变量x,y满足约束条件{x>=-1;y>=x;3x+2y 若变量x,y满足约束条件｛y=0,x-y-2 若变量x,y满足约束条件｛y=0,x-y-2 变量x,y满足约束条件,x+y>=3,x-y>=-1,2x-y 若变量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 已知变量x,y满足约束条件1 若实数x,y满足约束条件x-y-2=0,2y-3 已知变量x,y满足约束条件：x+y≧1,y≦3,x-y≦1,若z=Kx+y最大值为5,则实数k 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 已知变量x满足约束条件1：x-y+2=1；3:x+y-7 已知变量xy满足约束条件x+2y-3 设实数x,y满足约束条件：x>=2;y>=x;2x+y 当实数x,y,满足约束条件{x>0 y>=x 2x+y+k 已知变量x,y满足约束条件（x-y+2=1 实数x,y满足约束条件.求范围实数x,y满足约束条件x-y+2>=0 x+y-4>0x