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TANGENCY: A geometric condition that occurs when two curves touch at a single point with identical slopes at that point. This condition of tangency surfaces in several different areas of economic analysis, including indifference curve analysis (tangency between an indifference curve and budget line) and monopolistic competition (tangency between demand curve and long-run average cost curve). The tangency between two curves should be contrasted with the condition of intersection, in which two cross at a single point but do not have identical slopes.
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PERFECT COMPETITION, LONG-RUN PRODUCTION ANALYSIS In the long run, a perfectly competitive firm adjusts plant size, or the quantity of capital, to maximize long-run profit. In addition, the entry and exit of firms into and out of a perfectly competitive market guarantees that each perfectly competitive firm earns nothing more or less than a normal profit. As a perfectly competitive industry reacts to changes in demand, it traces out positive, negative, or horizontal long-run supply curve due to increasing, decreasing, or constant cost.
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PURPLE SMARPHIN
[What's This?]
Today, you are likely to spend a great deal of time going from convenience store to convenience store seeking to buy either rechargeable batteries or a rechargeable battery for your computer. Be on the lookout for cardboard boxes.
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The first paper currency used in North America was pasteboard playing cards "temporarily" authorized as money by the colonial governor of French Canada, awaiting "real money" from France.
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"Rowing harder doesn't help if the boat is headed in the wrong direction. " -- Kenichi Ohmae, management consultant
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FOMC
Federal Open Market Committee
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