Solve Several Models About EOQ And EPQ To Optimality By Using The Completing Square Method

In several papers,most authors use the derivation,that is,one-order derivation and second-derivation to get the EOQ models and EPQ models to optimalityIn this paper,I use the completing quare method to optimality on the basis of the papers, including one variable and two variables.The models in this paper are EOQ and EPQ model, EOQ and EPQ model with backorders and rework process EPQ model on infinite cycle.The method used in this paper is more easier than the derivation.