(2013•温州一模)若变量x,y满足不等式x−y−1≥0y≥1
(2013•温州二模)若实数x,y满足不等式组x+2y≥22x+y≤4x−y≥−1,则3|x-1|+y的最大值是( )
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≥0x+y≤1x+2y≥1
若变量x,y满足约束条件x+y≤2x≥1y≥0
(2012•南京二模)已知变量x,y满足约束条件x+y≥2x−y≤1y≤2
(2012•商丘二模)设实数x,y满足不等式组y+x≤1y−x≤1y≥0
(2014•闸北区三模)设实数x,y满足不等式组y+x≤1y−x≤1y≥0
(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( )
(2013•烟台一模)已知实数x,y满足不等式组2x−y≥0x+2y≥03x+y−5≤0,则2x+y的最大值是( )
设变量x,y满足约束条件x+y≤3x−y≥−1y≥1
(2012•昌平区二模)若变量x,y满足约束条件x≤0y≥0y−x≤4
若变量x,y满足不等式约束条件{ x-2y+1≤0,2x-y≥0,x≤1,}则点P(2x-y,x+y)表示区域的面积为