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DEMAND-DRIVEN BUSINESS CYCLES: Business cycle instability caused by changes in one or more of the four aggregate demand expenditures on gross domestic product--consumption, investment, government purchases, and net exports. This is one of two basic types of business cycles; the other being supply-drive business cycle. Demand-driven business cycles tend to be the more common of the two types. In general, demand-driven business cycles are more responsible for short-term instability, while supply-driven business cycles tend to be more closely associated with long-run changes in the economy.

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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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BROWN PRAGMATOX
[What's This?]

Today, you are likely to spend a great deal of time at a going out of business sale trying to buy either a weathervane with a cow on top or a box of multi-colored, plastic paper clips. Be on the lookout for fairy dust that tastes like salt.
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This isn't me! What am I?

Okun's Law posits that the unemployment rate increases by 1% for every 2% gap between real GDP and full-employment real GDP.
"The only profit center is the customer."

-- Peter Drucker, educator

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