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PERFECT COMPETITION, LONG-RUN ADJUSTMENT: A perfectly competitive industry undertakes a two-part adjustment to equilibrium in the long run. One is the adjustment of each perfectly competitive firm to the appropriate factory size that maximizes long-run profit. The other is the entry of firms into the industry or exit of firms out of the industry, to eliminate economic profit or economic loss. The end result of this long-run adjustment is a multi-faceted equilibrium condition that price is equal to marginal cost and average cost (both short run and long run).

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MARGINAL UTILITY

The additional utility obtained from the consumption or use of an additional unit of a good. It is specified as the change in total utility divided by the change in quantity. Marginal utility indicates what each additional unit of a good is worth to a consumer and provides a theoretical basis for understanding market demand and the law of demand. Marginal utility generally declines with increased consumption of a good, a reflection of the law of diminishing marginal utility.

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APLS

BROWN PRAGMATOX
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Today, you are likely to spend a great deal of time flipping through mail order catalogs wanting to buy either a small, foam rubber football or an instructional DVD on learning to the play the oboe. Be on the lookout for crowded shopping malls.
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One of the largest markets for gold in the United States is the manufacturing of class rings.
"Do you want to be safe and good, or do you want to take a chance and be great?"

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NLREG
Nonlinear Statistical Regression
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