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PERFECT COMPETITION, SHORT-RUN PRODUCTION ANALYSIS: A perfectly competitive firm produces the profit-maximizing quantity of output that equates marginal revenue and marginal cost. This production level can be identified using total revenue and cost, marginal revenue and cost, or profit. Because a perfectly competitive firm faces a perfectly elastic demand curve, it efficiently allocates resources by equating price and marginal cost. In addition, the marginal cost curve above the average variable cost curve is the perfectly competitive firm's short-run supply curve.
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Lesson 9: Consumer Demand | Unit 3: Marginal Utility
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Page: 10 of 22
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Topic:
Incremental Satisfaction
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- While total utility is a handy measure, a more useful measure is marginal utility.
- Marginal utility is the additional utility, or satisfaction of wants and needs, obtained from the consumption or use of an additional unit of a good or service.
- Marginal utility is, in other words, the extra satisfaction achieved from an extra unit of good.
- A handy formula:
| marginal utility | = | change in total utility
change in quantity |
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EFFICIENT INFORMATION SEARCH A comparison between the cost of acquiring information and the benefit generated by the information such that it is not possible to increase welfare or well being by acquiring any more of any less information. Efficient information search is achieved by equating the marginal cost of search with the benefit of search. This efficiency is comparable to the profit-maximizing decision by a producer and the utility-maximizing decision by a consumer.
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GRAY SKITTERY
[What's This?]
Today, you are likely to spend a great deal of time flipping through mail order catalogs trying to buy either a coffee cup commemorating the moon landing or a how-to book on surfing the Internet. Be on the lookout for florescent light bulbs that hum folk songs from the sixties.
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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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"Sometimes when you innovate, you make mistakes. It is best to admit them quickly and get on with improving your other innovations. " -- Steve Jobs, Apple Computer founder
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BOJ
Bank of Japan
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