CHAPTER 11. PERFECT COMPETITION McGraw-Hill/IrwinCopyright © 2008 by The McGraw-Hill Companies,...

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Transcript of CHAPTER 11. PERFECT COMPETITION McGraw-Hill/IrwinCopyright © 2008 by The McGraw-Hill Companies,...

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PERFECT COMPETITION

McGraw-Hill/Irwin Copyright © 2008 by The McGraw-Hill Companies, Inc. All rights reserved.

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The Shutdown Condition

Shutdown condition: if price falls below the minimum of average variable cost, the firm should shut down in the short run.

The short-run supply curve of the perfectly competitive firm is the rising portion of the short-run marginal cost curve that lies above the minimum value of the average variable cost curve

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Profit Maximizing Output

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Profit Maximizing Output, Part 2

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Figure 11.4: The Short-RunSupply Curve of a Perfectly

Competitive Firm

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Figure 11.5: The Short-Run Competitive Industry Supply

Curve

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Figure 11.6: Short-Run Priceand Output Determination under

Pure Competition

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Short-run Competitive Equilibrium

Even though the market demand curve is downward sloping, the demand curve facing the individual firm is perfectly elastic.

Breakeven point: the point at which price equal to the minimum of average total cost.

The lowest price at which the firm will not suffer negative profits in the short run.

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Figure 11.7: A Short-RunEquilibrium Price that Results in

Economic Losses

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The Efficiency Of Short-runCompetitive Equilibrium

Allocative efficiency: a condition in which all possible gains from exchange are realized.

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Figure 11.8: Short-run Competitive Equilibrium is

Efficient

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Producer Surplus

A competitive market is efficient when it maximizes the net benefits to its participants.

Producer surplus: the dollar amount by which a firm benefits by producing a profit-maximizing level of output.

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Figure 11.9: Two Equivalent Measures

of Producer Surplus

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Figure 11.10: AggregateProducer Surplus When Individual Marginal Cost Curves are Upward

Sloping Throughout

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Figure 11.11: The Total Benefit from Exchange in a Market

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Figure 11.12: Producer andConsumer Surplus in a Market Consisting of Careful Fireworks

Users

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Figure 11.13: A Price Level that Generates Economic Profit