已知变量x,y满足约束条件x−y+2≤0x≥1x+y−7≤0
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
已知变量x,y满足约束条件x≥0y≥x3x+4y−12≤0
若变量x,y满足约束条件x≥−1y≥xx+y≤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1
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?
(2012•南京二模)已知变量x,y满足约束条件x+y≥2x−y≤1y≤2
已知变量x,y满足约束条件x+2y-3≤0x+3y-3≥0y-1≤0
设变量x,y满足约束条件x+y≤3x−y≥−1y≥1