Sadjadi - Department of Industrial Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran
Arabzadeh - Department of Industrial Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran

This paper presents a multi objective geometric programming model which determines the product's selling price in two markets. The researchers assume demand is a function of price and marketing expenditure in two markets. The cost of production is also assumed to be a function of demands in both markets. Our model is a posynomial function which is solved using Geometric Programming (GP). In their GP implementation, the researchers use a transformed dual problem to change the model into an optimization of an unconstraint problem with a single variable solved using a simple line search. In order to study the behavior of the model they analyze the solution in different cases and a numerical example is used to demonstrate the implementation for each case.

geometric programming; production and operation management; economics