(2012•南京二模)已知变量x,y满足约束条件x+y≥2x−y≤1y≤2
(2012•南京二模)已知变量x,y满足约束条件x+y≥2x−y≤1y≤2
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
(2014•文登市二模)已知变量x,y满足约束条件x+y≥2x−y≤20≤y≤3,若目标函数z=y+ax仅在点(5,3)
(2013•青岛二模)设变量x、y满足线性约束条件x+y≥3x−y≥−12x−y≤3,则目标函数z=log7(2x+3y
(2012•昌平区二模)若变量x,y满足约束条件x≤0y≥0y−x≤4
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 y≤2 x+y≥1 x-y≤1 则z=3x+y的最大值是
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≥-1 x+y≥1 2x-y≤1 z=(x-2y)/(x+y)的最大值
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-y+1≥0 x-2≤0 y+2≥0,则目标函数z=x+y的最大值.