已知x、y满足约束条件2x−y+1≥02x+y≥0x≤1
设变量x,y满足约束条件x−y≥0x+y≤1x+2y≥1
若变量x,y满足约束条件x+y≤2x≥1y≥0
.若x、y满足约束条件 x - y +1≥0
已知实数x,y满足约束条件x−y≤12x+y≤4x≥1
已知x,y满足约束条件:x-y+1>=0,x+y-2>=0,x
设x,y满足约束条件x+y≤1y≤xy≥−2
(2012•浙江模拟)已知实数x,y满足约束条件2x−y≤0x−3y+5≥0y≥1
已知变量x,y满足约束条件x+2y≥22x+y≤44x−y≥−1
已知变量x y 满足约束条件x-y+1≥0 x-2≤0 y+2≥0,则目标函数z=x+y的最大值.
已知x,y满足约束条件x−y+5≥0x+y≥0x≤3
已知x,y满足约束条件x−y+5≥0x+y≥0x≤3,则z=x+2y的最小值为( )
若变量x,y满足约束条件x≥−1y≥xx+y≤1