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September 4, 2026 

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LONG-RUN AGGREGATE SUPPLY CURVE: A graphical representation of the long-run relation between real production and the price level, holding all ceteris paribus aggregate supply determinants constant. The long-run aggregate supply, or LRAS, curve is one of two curves that graphical capture the supply-side of the aggregate market; the other is the short-run aggregate supply curve (SRAS). The demand-side of the aggregate market is occupied by the aggregate demand curve. The vertical LRAS curve captures the independent relation between real production and the price level that exists in the long run.

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U-SHAPED COST CURVES

The family of short-run cost curves consisting of average total cost, average variable cost, and marginal cost, all of which have U-shapes. Each is U-shaped because it begins with relatively high but falling cost for small quantities of output, reaches a minimum value, then has rising cost at large quantities of output. Although the average fixed cost curve is not U-shaped, it is occasionally included with the other three just for sake of completeness.

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A Brief Introduction To Get You Started

Through undaunted determination, sheer luck, or a missed turnpike exit, you have happened upon A Pedestrian's Guide to the Economy. You'll find hours of reading pleasure contained within this site, with more entertainment value per calorie than most office memos. A Pedestrian's Guide to the Economy, however, is more than a recreational web site. As a handy reference source, it provides answers to many of the most asked, a few of the least asked, and some of the never asked questions about the economy.
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Today, you are likely to spend a great deal of time lost in your local discount super center hoping to buy either a tall storage cabinet with five shelves and a secure lock or a birthday greeting card for your grandmother. Be on the lookout for the happiest person in the room.
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The New York Stock Exchange was established by a group of investors in New York City in 1817 under a buttonwood tree at the end of a little road named Wall Street.
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