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


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  • Axel Pierru
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    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

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    Article provided by De Boeck Université in its journal Recherches économiques de Louvain.

    Volume (Year): 73 (2007)
    Issue (Month): 2 ()
    Pages: 153-171

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    Handle: RePEc:cai:reldbu:rel_732_0153

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    Keywords: microeconomics; marginal cost; linear programming;

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    Cited by:
    1. Massol, O., 2011. "A cost function for the natural gas transmission industry: further considerations," Working Papers 11/03, Department of Economics, City University London.


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