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MARGINAL RETURNS: The change in the quantity of total product resulting from a unit change in a variable input, holding all other inputs fixed. You might recognize this as the definition of marginal product. It is. Marginal returns is an older and more generic term for marginal product. While marginal product has largely replaced marginal returns in most discussions of short-run production, the phrase does persist in a few terms like the law of diminishing marginal returns. When you come upon the phrase marginal returns, more often than not, it's probably referring to marginal product.

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PERFECTLY INELASTIC

An elasticity alternative in which changes in one variable (usually price) do NOT cause any changes in another variable (usually quantity). Quantity is totally, completely unresponsive to price. Quantity just does not change, regardless of changes in price. This characterization of elasticity is most important for the price elasticity of demand and the price elasticity of supply. Perfectly inelastic is one of five elasticity alternatives. The other four are perfectly elastic, relatively elastic, relatively inelastic, and unit elastic.

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YELLOW CHIPPEROON
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Today, you are likely to spend a great deal of time wandering around the downtown area seeking to buy either a coffee cup commemorating last Friday (you know why) or a wall poster commemorating the first day of spring. Be on the lookout for empty parking spaces that appear to be near the entrance to a store.
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Paper money used by the Commonwealth of Massachusetts prior to the U.S. Revolutionary War, which was issued against the dictates of Britain, was designed by patriot and silversmith, Paul Revere.
"Failure is the opportunity to begin again, more intelligently. "

-- Henry Ford, automobile manufacturer

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