(2012•湛江一模)已知实数x,y满足:x≥1y≤2x−y≤0
(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
(2012•浙江模拟)已知实数x,y满足约束条件2x−y≤0x−3y+5≥0y≥1
(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( )
(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•安徽模拟)已知实数x,y满足x−2y+2≥0y≥|x|
(2012•商丘二模)设实数x,y满足不等式组y+x≤1y−x≤1y≥0
已知实数x,y满足y≤1y≥|x−1|
已知实数x,y满足条件x≥0,y≥x,3x+4y≤12,则(x+2y+3)/(x +1)的最大值是
若实数x,y满足x≥1x+y≤4x−2y+c≤0
已知实数x,y满足2x+y−2≥0x−2y+4≥03x−y−3≤0则x
已知实数x,y满足条件{2x-y+1≥0,2x+y≥0,x≤1,求z=x+3y的最小值.
(2014•闸北区三模)设实数x,y满足不等式组y+x≤1y−x≤1y≥0