(2012•浙江模拟)已知实数x,y满足约束条件2x−y≤0x−3y+5≥0y≥1
(2012•浙江模拟)已知实数x,y满足约束条件2x−y≤0x−3y+5≥0y≥1
(2012•安徽模拟)已知实数x,y满足x−2y+2≥0y≥|x|
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•黄州区模拟)设实数x,y满足约束条件2x−y+2≥08x−y−4≤0x≥0,y≥0
已知x,y满足约束条件x−y+5≥0x+y≥0x≤3
(2012•泉州模拟)设实数x、y满足约束条件2x+y≤10x−y≤2x≥3,则z=x+y的最小值为( )
已知实数x,y满足约束条件x−y≤12x+y≤4x≥1
(2012•浙江模拟)若实数x,y满足不等式组x−2y+5≥03−x≥0x+y≥0,则z=x+2y的最小值是( )
设变量x,y满足约束条件x−y≥0x+y≤1x+2y≥1
(2012•南京二模)已知变量x,y满足约束条件x+y≥2x−y≤1y≤2
设实数x,y满足约束条件x≥1且x≠2y≥1x+2y−5≤0,则z=x+y−1x−2的取值范围为( )
已知实数x,y满足约束条件x≥0y≤x2x+y-9≤0,则z=x+3y的最大值等于( )