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SLOPE, LONG-RUN AGGREGATE SUPPLY CURVE: The long-run aggregate supply (LRAS) curve is a vertical line with an infinite slope, reflecting the independent relation between the price level and aggregate real production. A higher price level is associated with the same real production as a lower price level. And this real production is that produced when resources are fully employed, that is, full-employment production. Real production is unaffected by the price level because prices are flexible in the long run. Long-run price flexibility ensures that ALL markets (product, financial, and resource) are in equilibrium.
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SLOPE, AGGREGATE EXPENDITURES LINE The positive slope of the aggregate expenditures line is the sum of the marginal propensity to consume (MPC), marginal propensity to invest (MPI), and marginal propensity for government purchases (MPG), less the marginal propensity to import (MPM). This slope is greater than zero but less than one, reflecting induced expenditures by the four macroeconomic sectors (household, business, government, and foreign). The slope of the aggregate expenditures line determines the magnitude of the multiplier process.
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PURPLE SMARPHIN
[What's This?]
Today, you are likely to spend a great deal of time flipping through mail order catalogs hoping to buy either a coffee cup commemorating yesterday or a replacement remote control for your television. Be on the lookout for slightly overweight pizza delivery guys.
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Helping spur the U.S. industrial revolution, Thomas Edison patented nearly 1300 inventions, 300 of which came out of his Menlo Park "invention factory" during a four-year period.
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"I much prefer the sharpest criticism of a single intelligent man to the thoughtless approval of the masses." -- Johannes Kepler, German Astronomer
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MU
Marginal Utility
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