(3)
x ≥ 0, y ≥ 0 (4)
Solution The shaded region in Fig 12 3 is the feasible region ABC determined by the
system of constraints (2) to (4), which is bounded The coordinates of corner points
Corner Point Corresponding value
of Z
(0, 0)
0
(30, 0)
120 ←
Maximum
(20, 30)
110
(0, 50)
50
Corner Point Corresponding value
of Z
(0, 5)
2500
(4, 3)
2300
(0, 6)
3000
Minimum
←
Fig 12