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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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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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Today, you are likely to spend a great deal of time flipping through the yellow pages hoping to buy either a how-to book on fixing your computer, with illustrations or several magazines on computer software. Be on the lookout for crowded shopping malls.
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The portrait on the quarter is a more accurate likeness of George Washington than that on the dollar bill.
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"Success is the child of audacity. " -- Benjamin Disraeli, British statesman
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Exports;Marks the Spot
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