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LONG-RUN AVERAGE COST CURVE: 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 (usually abbreviated LRAC) 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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PERFECT COMPETITION, REVENUE DIVISION The marginal approach to analyzing a perfectly competitive firm's short-run profit maximizing production decision can be used to identify the division of total revenue among variable cost, fixed cost, and economic profit. The U-shaped cost curves used in this analysis provide all of the information needed on the cost side of the firm's decision. The demand curve facing the firm (which is also the firm's average revenue and marginal revenue curves) provides all of the information needed on the revenue side.
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YELLOW CHIPPEROON
[What's This?]
Today, you are likely to spend a great deal of time calling an endless list of 800 numbers looking to buy either a green and yellow striped sweater vest or a Boston Red Sox baseball cap. Be on the lookout for a thesaurus filled with typos.
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A U.S. dime has 118 groves around its edge, one fewer than a U.S. quarter.
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"He who has a „why¾ to live can bear with almost any „how."" -- Friedrich Nietzsche, Philosopher
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APC
Average Propensity to Consume
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