(2011•河北区一模)若x,y满足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•浙江模拟)已知实数x,y满足约束条件2x−y≤0x−3y+5≥0y≥1
设变量x,y满足约束条件x−y≥0x+y≤1x+2y≥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( )
若实数x,y满足x≥1x+y≤4x−2y+c≤0
一.若x,y满足x+2y-3≤0,x+3y-3≥0,y-1≤0.若目标函数z=ax+y(
(2011•绵阳二模)已知x,y满足线性约束条件:x−2y+3≥02x+y−9≤02x+6y−9≥0,若目标函数z=-x
若x,y满足2x+y-1≤0y≥0x≥0
若变量x,y满足约束条件x+y≤2x≥1y≥0
若实数x,y满足x-4y+3≤0,3x+5y-25≤0,x≥1,则2x-y的最大值是多少
(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•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( )