Engineering Optimization: Theory and Practice, Fourth Edition

(Martin Jones) #1
Problems 627

10.2 Define the following terms:

(a)Cutting plane
(b)Gomory’s constraint
(c)Mixed-integer programming problem
(d)Additive algorithm

10.3 Give two engineering examples of a discrete programming problem.
10.4 Name two engineering systems for which zero–one programming is applicable.
10.5 What are the disadvantages of truncating the fractional part of a continuous solution for
an integer problem?
10.6 How can you solve an integer nonlinear programming problem?
10.7 What is a branch-and-bound method?
10.8 Match the following methods:
(a)Land and Doig Cutting plane method
(b)Gomory Zero–one programming method
(c)Balas Generalized penalty function method
(d)Gisvold and Moe Branch-and-bound method
(e)Reiter and Rice Generalized quadratic programming method

Problems


Find the solution for Problems 10.1–10.5 using a graphical procedure.
10.1 Minimizef= 4 x 1 + 5 x 2

subject to

3 x 1 +x 2 ≥ 2
x 1 + 4 x 2 ≥ 5
3 x 1 + 2 x 2 ≥ 7
x 1 , x 2 ≥ 0 ,integers

10.2 Maximizef= 4 x 1 + 8 x 2

subject to

4 x 1 + 5 x 2 ≤ 40
x 1 + 2 x 2 ≤ 12
x 1 , x 2 ≥ 0 ,integers
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