设实数x,y满足x−y−2≤0x+2y−5≥0y−2≤0
设实数x,y满足x−y−2≤0x+2y−5≥0y−2≤0
设变量x,y满足约束条件x−y≥0x+y≤1x+2y≥1
若实数x,y满足x≥1x+y≤4x−2y+c≤0
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( )
设实数x,y满足条件x≥0x≤yx+2y≤3
已知实数x,y满足2x+y−2≥0x−2y+4≥03x−y−3≤0则x
设z=x+2y,其中实数x,y满足x−y+1≥0x+y−2≤0x≥0y≥0
已知实数x、y满足2x−y≤0x+y−5≥0y−4≤0
(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满足条件2x+y≥3x+y−3≤0x≥0y≥0