变量x,y满足条件x+y−1≤0x−y≤0x≥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
设z=2x+y,变量x,y满足条件x−4y≤−33x+5y≤25x≥1
若实数x,y满足条件0≤x≤10≤y≤22y−x≥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?
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≥0y≥x3x+4y−12≤0
变量x,y满足x-2y=0,x
设变量x,y满足约束条件x+y≤3x−y≥−1y≥1
设变量x、y满足x+y≥1x−y≥02x−y−2≤0,则目标函数z=2x+y的最小值为( )
(2012•唐山二模)设变量x、y满足x+y≥1x−y≥02x−y−2≤0,则目标函数z=2x+y的最小值为( )
设变量x,y满足约束条件x+2y−5≤0x−y−2≤0x≥0