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TOTAL REVENUE CURVE, MONOPOLISTIC COMPETITION: A curve that graphically represents the relation between total revenue received by a monopolistically competitive firm for selling its output and the quantity of output sold. It is used with the firm's total cost curve to determine economic profit. The marginal revenue curve, a key factor for determining the profit-maximizing level of a firm's output, is derived directly from the total revenue curve. The slope of this total revenue curve is marginal revenue. This curve is constructed to capture the relation between total revenue and the level of output, holding other variables constant.

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INVESTMENT LINE

A graphical depiction of the relation between investment expenditures by the business sector and the economy's aggregate level of income or production. This relation plays a key role in the study of Keynesian economics. A investment line is characterized by vertical intercept, which indicates autonomous investment, and slope, which is the marginal propensity to invest and indicates induced investment. The aggregate expenditures line used in Keynesian economics is derived by adding or stacking the investment line onto the consumption line, then adding government purchases and net exports to this stack.

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BROWN PRAGMATOX
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Today, you are likely to spend a great deal of time going from convenience store to convenience store looking to buy either a how-to book on home repairs or a large, stuffed kitty cat. Be on the lookout for gnomes hiding in cypress trees.
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Ragnar Frisch and Jan Tinbergen were the 1st Nobel Prize winners in Economics in 1969.
"I do the best I know how, the very best I can, and I mean to keep doing so until the end. "

-- Abraham Lincoln, 16th US president

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