Operations Research Models and Methods

EXERCISE SESSION

Excel Solver and AMPL

Prof. dr. E-H. Aghezzafir. Rodrigo Rezende Amaral

Excel Solver

Session 3 - Exercise 4

Exercise 4

Exercise 4

X1 X2 M1 Limits CV

solution

obj. fun

Exercise 4

Exercise 4

Exercise 4

Exercise 4

X1 X2 M1 Limits CV

solution 1 2 3

obj. fun 300 400 -50 950

0,8 1 -1

Exercise 2

check the LINDO output.

Exercise 2

AMPL

Session 1 - Exercise 1

Session 1 - Exercise 1

Session 1 - Exercise 1

Session 1 - Exercise 1

Session 1 - Exercise 1

Session 1 - Exercise 1

Session 1 - Exercise 1

Session 1 - Exercise 1

Session 1 - Exercise 1

Best practices:

Organize your program in 3 files:

• .run → “master program”

• .mod → contains the model logic statements

• .dat → contains the data values

Session 1 - Exercise 1Example: .mod (1/3)

Session 1 - Exercise 1Example: .mod (2/3)

Session 1 - Exercise 1Example: .mod (3/3)

Session 1 - Exercise 1Example: .dat (1/1)

Session 1 - Exercise 1Example: .run (1/1)

Session 1 - Exercise 7

Session 1 - Exercise 7

Session 1 - Exercise 7.mod (1/3)

Session 1 - Exercise 7.dat

Session 1 - Exercise 7.mod (2/3)

Session 1 - Exercise 7.mod (3/3)

Session 1 - Exercise 7.run

Session 1 - Exercise 7

.run (extra info: commands for , let and fix)

Session 2 - Exercise 11

Session 1 - Exercise 9