(2012•道里区三模)已知x,y满足条件x≥0x−y+2≥02x+y−5≤0
(2012•道里区三模)已知x,y满足条件x≥0x−y+2≥02x+y−5≤0
已知实数x,y满足条件2x+y≥3x+y−3≤0x≥0y≥0
(2012•浙江模拟)已知实数x,y满足约束条件2x−y≤0x−3y+5≥0y≥1
已知x,y满足约束条件x−y+5≥0x+y≥0x≤3,则z=x+2y的最小值为( )
(2012•安徽模拟)已知实数x,y满足x−2y+2≥0y≥|x|
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
已知x,y满足约束条件x−y+5≥0x+y≥0x≤3
已知实数x,y满足x−y+5≥0x≤3x+y≥0
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.
(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( )
已知点P(x,y)的坐标满足条件x≤1y≤1x+y−1≥0
若实数x,y满足条件0≤x≤10≤y≤22y−x≥1