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LONG-RUN AGGREGATE MARKET: A macroeconomic model relating the price level and real production under the assumption that ALL prices flexible. This is one of two aggregate market submodels used to analyze business cycles, aggregate production, unemployment, inflation, stabilization policies, and related macroeconomic phenomena. The other is the short-run aggregate market. The long-run aggregate market isolates the interaction between aggregate demand and long-run aggregate supply. The key assumption of this model is that ALL prices, especially resource prices, are flexible. The primary result of this model is that the economy achieves long-run equilibrium at full-employment real production.

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Lesson 4: Production Possibilities | Unit 3: The Curve Page: 10 of 24

Topic: Connecting Points <=PAGE BACK | PAGE NEXT=>

Like a constellation in the sky, we will find it convenient to outline an 'image' by connecting the individual points.
  • Connecting our 11 points lets us include other options. These are only 11 of many possibilities.
  • The curve we get is the production possibilities curve. It's also termed the production possibilities frontier for reasons that will become clear as we continue this lesson.
  • Note that the curve is flat at the top and steep at the bottom.

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MARGINAL COST

The change in total cost (or total variable cost) resulting from a change in the quantity of output produced by a firm in the short run. Marginal cost (MC) indicates how much total cost changes for a given change in the quantity of output. Because changes in total cost are matched by changes in total variable cost in the short run (total fixed cost is fixed), marginal cost is the change in either total cost or total variable cost. It is found by dividing the change in total cost (or total variable cost) by the change in output. Marginal cost is one of four cost concepts used in short-run production analysis. The other three are average total cost, average fixed cost, and average variable cost.

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