Economic Definition of marginal cost and diminishing marginal returns. Defined.
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Term marginal cost and diminishing marginal returns Definition: Decreasing then increasing marginal cost that gives rise to a U-shaped marginal cost curve reflects increasing then decreasing marginal returns. In particular the decreasing marginal returns is caused by the law of diminishing marginal returns. As such, the law of diminishing marginal returns affects not only the short-run production of a firm but also the cost of production in the short run.
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