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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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OTHER PRICES, DEMAND DETERMINANT The prices of other goods that influence the decision to purchase a particular good, which are assumed constant when a demand curve is constructed. Other prices can be for goods that are either substitutes-in-consumption or complements-in-consumption. This is one of five demand determinants that shift the demand curve when they change. The other four are other prices, buyers' preferences, buyers' expectations, and number of buyers.
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BLACK DISMALAPOD
[What's This?]
Today, you are likely to spend a great deal of time watching the shopping channel trying to buy either a weathervane with a cow on top or a box of multi-colored, plastic paper clips. Be on the lookout for strangers with large satchels of used undergarments.
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A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court!
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"Luck is what happens when preparation meets opportunity. " -- Seneca, Roman philosopher
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Cincinnati Stock Exchange
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