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BUYERS' PREFERENCES, DEMAND DETERMINANT: The satisfaction that buyers receive from the purchase of a good, which is assumed constant when a demand curve is constructed. Buyers' preferences is one of five demand determinants that shift the demand curve when they change. The other four are buyers' income, other prices, buyers' expectations, and number of buyers.

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PRODUCT LIFE CYCLE

The different stages that a product traverses over the course of its life from initial availability (birth) to eventual unavailability (death). The key stages are development, introduction, growth, maturity, saturation, and decline. The product life cycle, represented by an S-shaped curve, is an adaptation of the biological life cycle and is common to the study of marketing. It is also important in the analysis of innovation and economic instability. In addition to biological growth, comparable S-shaped life cycles are found in short-run production of a firm, the growth of a person's income, the acquisition of knowledge, and the development of a civilization.

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BEIGE MUNDORTLE
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Today, you are likely to spend a great deal of time browsing through a long list of dot com websites wanting to buy either a cross-cut paper shredder or a birthday greeting card for your father. Be on the lookout for malfunctioning pocket calculators.
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The portrait on the quarter is a more accurate likeness of George Washington than that on the dollar bill.
"In a restless, creative business with an emphasis on experiment and development, ideas are the lifeblood."

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LRMC
Long Run Marginal Cost
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