实数x,y满足条件x+y−4≤0x−2y+2≥0x≥0,y≥0
设实数x,y满足条件x≥0x≤yx+2y≤3
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≥3x+y−3≤0x≥0y≥0
若实数x,y满足x≥1x+y≤4x−2y+c≤0
若实数x,y满足条件0≤x≤10≤y≤22y−x≥1
已知实数x,y满足2x+y−2≥0x−2y+4≥03x−y−3≤0则x
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.
已知实数x,y满足2x+y−2≥0x−2y+4≥03x−y−3≤0
若实数x,y满足不等式组2x−y≥0x+y−3≥03x+y−8≤0
已知实数x、y满足2x−y≤0x+y−5≥0y−4≤0
若实数x,y满足x−y+1≥0x+y≥0x≤0
设变量x,y满足约束条件x−y≥0x+y≤1x+2y≥1