设实数x,y满足条件x≥0x≤yx+2y≤3
设实数x,y满足条件x≥0x≤yx+2y≤3
设实数x,y满足x-y-2≤0x+2y-4≥02y-3≤0,则yx的最大值是 ___ .
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.
实数x、y、z满足x=6-3yx+3y-2xy+2z
已知实数x,y满足条件2x+y≥3x+y−3≤0x≥0y≥0
若实数x,y满足x−y+1≤0x>0y≤2,则yx的取值范围是( )
设实数x,y满足不等式组y+x≤1y-x≤1y≥0
设x,y∈R,则满足条件x+2y≥0,x-3y-5≤0.x^2+y^2-4x+2y-4≤0的点p(x,y)所在的平面区域
(2014•新余二模)设实数x,y满足约束条件x−y−2≤0x+2y−5≥0y≤2,则u=2x+yx+2y的取值范围是(
设实数xy满足线性约束条件x+y≤3 x-y≥1 y≥0
若实数x,y满足条件0≤x≤10≤y≤22y−x≥1