2- Apply WSM on the following model and represent the full form of the final model. Suppose that we have 1 = 2 = 3 = 4. Finally, do a sensitivity analysis on the RHS value of the 1st constraint considering the change interval [-10%, 0%, +10%]. (Point: 50)

maximize = ( + 2) 1 2

minimize = 1 + 3 2

minimize = 1 + 2

maximize = 2( + )

subject to 1500 1 + 2500 2 (7 + ) 1000,

1 + ( + 1) 2 2,

0 {1,2}.