Short-run and long-run marginal costs of joint products in linear programming

Axel Pierru

Recherches économiques de Louvain, 2007, vol. 73, issue 2, 153-171

Abstract: In standard microeconomic theory, short-run and long-run marginal costs are equal for production equipment with adjusted capacity. When the production of joint products from interdependent equipment is modeled with a linear program, this equality is no longer verified. The short-run marginal cost then takes on a left-hand value and a right-hand value which generally differ from the long-run marginal cost. In this article, we demonstrate and interpret the relationship existing between long-run marginal cost and short-run marginal costs for a given finished product. That relationship is simply expressed as a function of marginal capacity adjustments (determined in the long run) and marginal values of capacities (determined in the short run). JEL Classification: D20, C61

Keywords: microeconomics; marginal cost; linear programming (search for similar items in EconPapers)
JEL-codes: C61 D20 (search for similar items in EconPapers)
Date: 2007
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Citations: View citations in EconPapers (6)

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Working Paper: Short-run and long-run marginal costs of joint products in linear programming (2008)
Working Paper: Short-run and long-run marginal costs of joint products in linear programming (2007)
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