已知实数x、y满足y≤2xy≥−2x4x−y−4≤0
已知实数x、y满足y≤2xy≥−2x4x−y−4≤0
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2x+y−2≥0x−2y+4≥03x−y−3≤0
已知实数xy满足x+2y
已知实数x、y满足2x−y≤0x+y−5≥0y−4≤0
已知实数xy满足不等式组x≥0,y≤x,x+y-4≤0,则z=2x-y的最大值为
若实数x,y满足x≥1x+y≤4x−2y+c≤0
已知实数x,y满足条件2x+y≥3x+y−3≤0x≥0y≥0
设x,y满足约束条件x+y≤1y≤xy≥−2
(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y≤1y≥|x−1|
已知实数x,y满足约束条件x−y≤12x+y≤4x≥1