In this section we summarize formulas for the unrestricted optimums of the decision variables for the several deterministic models. We are assuming that all parameters are nonnegative, lot sizes are positive and fill rates are between 0 and 1 inclusive. For the backordered cases , , and indicate respectively that backorder cost is proportional to waiting time, there is a fixed cost in the event of a backorder and there is a fixed cost for each unit of backorder.

Models with No Shortages