(2012•商丘二模)设实数x,y满足不等式组y+x≤1y−x≤1y≥0
(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
设实数x,y满足不等式组y+x≤1y-x≤1y≥0
(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( )
若实数x,y满足不等式组x-y+1≥0x+y-1≤0y≥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( )
(2014•湛江二模)已知实数x、y满足不等式组x≥0y≥02x+y≤2,且ax+by≤1,(a>0,b>0)恒成立,则
(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( )
若实数x,y满足不等式组x+3y−3≥02x−y−3≤0x−my+1≥0
已知实数z、y满足不等式组x−2y+3≥03x+2y−7≤0x+2y−1≥0,则x-y的最小值为( )
(2012•湛江二模)运行如图所示框图,坐标满足不等式组x+y−3≥0x−y+2≥0x≤3
(2012•浙江模拟)已知实数x,y满足约束条件2x−y≤0x−3y+5≥0y≥1