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Production Function
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Function showing the highest output a firm can produced for every specified combination of inputs
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Short Run
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period of time in which quantities of one or more production factors cannot be changed
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Long Run
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amount of time needed to make all production inputs variable
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Average Product
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output per unit of a particular input
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Marginal Product
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additional output produced as an input is increased by one unit
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Marginal Product > Average Product
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Average product is increasing
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Marginal Product < Average Product
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Average product is decreasing
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Economic Cost
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cost to a firm of utilizing economic resources in production
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Opportunity Cost
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cost associated with opportunities that are forgone when a firm's resources are not put to their best alternative use
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Sunk Cost
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Expenditure made that cannot be recovered
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Fixed Cost
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cost that does not vary with the level of output
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Variable Cose
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cost that varies as output varies
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Total Cost
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Fixed Cost + Variable Cost
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Marginal Cost
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increase in cost resulting from the production of one extra unit of output
change in variable cost divided by change in output
change in variable cost divided by change in output
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Average Total Cost
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Total Cost / Level of output
TC / q
TC / q
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Average Fixed Cost
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Fixed Cost / Level of output
FC / q
FC / q
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Average Variable Cost
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Variable Cost / Level of Output
VC / q
VC / q
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Profit
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Total Revenue minus Total Cost
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Marginal Revenue
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Change in revenue resulting from a one-unit increase in output
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How/when is profit maximized?
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When marginal revenue equals marginal cost
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Marginal Rate of Technical Substitutions
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Amount by which the quantity of one input can be reduced when one extra unit of another input is used, so that output remains constant
MRTS = -Change in capital input / change in labor input
Marginal Product of Labor / Marginal Product of Capital
MRTS = -Change in capital input / change in labor input
Marginal Product of Labor / Marginal Product of Capital