已知2x+3y≤6x−y≥0y≥0
已知实数x,y满足2x+y−2≥0x−2y+4≥03x−y−3≤0则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( )
已知{3x-y-6≤0 x-y+2≥0,则z=3|x|+y的
已知实数x,y满足2x+y−2≥0x−2y+4≥03x−y−3≤0
已知实数x,y满足条件2x+y≥3x+y−3≤0x≥0y≥0
已知x,y满足x+y-6≤0,x+2y-8≤0,2x-3y-6≤0,x≥0,0≤y≤3,求(3y-12)/(x-6)的最
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x≥0,y≥x,3x+4y≤12,则(x+2y+3)/(x +1)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
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.
已知 x y 满足约束条件 x-y+5≥0 x+y≥0 x≤3 z=2x+4y的最小值为