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LRAC CURVE: The common abbreviation for the long-run average cost curve, which is a curve depicting the per unit cost of producing a good or service in the long run when all inputs are variable. The long-run average cost curve can be derived in two ways. On is to plot long-run average cost, which is, long-run total cost divided by the quantity of output produced. at different output levels. The more common method, however, is as an envelope of an infinite number of short-run average total cost curves. Such an envelope is base on identifying the point on each short-run average total cost curve that provides the lowest possible average cost for each quantity of output. The long-run average cost curve is U-shaped, reflecting economies of scale (or increasing returns to scale) when negatively-sloped and diseconomies of scale (or decreasing returns to scale) when positively sloped. The minimum point (or range) on the LRAC curve is the minimum efficient scale.

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UTILITY MAXIMIZATION

The process or goal of obtaining the highest level of utility from the consumption of goods or services. The goal of maximizing utility is a key assumption underlying consumer behavior studied in consumer demand theory. Consumers are assumed to make choices, especially concerning the purchase of goods, such that they obtain the highest possible level of satisfaction. Utility maximization can be achieved at the peak of the total utility curve.

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Today, you are likely to spend a great deal of time strolling through a department store seeking to buy either a coffee cup commemorating the 1960 Presidential election or a how-to book on fixing your computer, with illustrations. Be on the lookout for door-to-door salesmen.
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The Dow Jones family of stock market price indexes began with a simple average of 11 stock prices in 1884.
"The majority of men meet with failure because of their lack of persistence in creating new plans to take the place of those that fail. "

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