Non form bare prob- - The x 0. feasiblev I (a) Demonstrate graphically that this problem has an unbounded objective function. (b) Construct the dual problem. I (c) Demonstrate graphically that the dual problem has no feasi ble solutions. he 6.4-1. Consider the model of Prob. 7.2-1. Use duality theory di- 0, rectly to determine whether the current basic solution remains opti- mal after each of the following independent changes. (a) The change in part (e) of Prob. 7.2-1 (b) The change in part (g) of Prob. 7.2-1 a- ew Non form bare prob- - The x 0. feasiblev I (a) Demonstrate graphically that this problem has an unbounded objective function. (b) Construct the dual problem. I (c) Demonstrate graphically that the dual problem has no feasi ble solutions. he 6.4-1. Consider the model of Prob. 7.2-1. Use duality theory di- 0, rectly to determine whether the current basic solution remains opti- mal after each of the following independent changes. (a) The change in part (e) of Prob. 7.2-1 (b) The change in part (g) of Prob. 7.2-1 a- ew