设变量x,y满足约束条件x+y≤3x−y≥−1y≥1
设变量x,y满足约束条件x+y≤3x−y≥−1y≥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≥−1y≥xx+y≤1
设变量x,y满足约束条件x-y>-1,x+y>1,3x-y
设变量x,y满足约束条件2x−y≤2x−y≥−1x+y≥1
设变量x,y满足约束条件x+y≥3x−y≥−1,则目标函数z=y+2x的最小值为( )
设变量x y满足约束条件x-y≥-1 x+y≥1 2x-y≤1 z=(x-2y)/(x+y)的最大值
设变量x,y满足约束条件2x+y≤2,x≥y,y≥-1,则z=-y+3x的最大值为?
设x,y满足约束条件x+y≤1y≤xy≥−2
若变量x,y满足约束条件x+y≤2x≥1y≥0
设变量满足约束条件x+y≥3,x-y≥-1,2x-y≤3,则目标函数z=2x+2y最小值?
设变量x,y满足约束条件 {x-y≥0,x+y≤1,x+2y≥0},则函数Z=2x+y 的最大值?