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May 26, 2022 

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PERFECT COMPETITION AND DEMAND: The demand curve for the output produced by a perfectly competitive firm is perfectly elastic at the going market price. The firm can sell all of the output that it wants at this price because it is a relatively small part of the market. As a price taker, the firm has no ability to charge a higher price and no reason to charge a lower one. The market price facing a perfectly competitive firm is also the firm's average revenue and, most importantly, its marginal revenue.

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Lesson Contents
Unit 1: Money Basics
  • What It Is
  • THE Medium
  • Unit 1 Summary
  • Unit 2: More About Money
  • Functions
  • Medium of Exchange
  • Measure of Value
  • Store of Value
  • Standard of Deferred Payment
  • Characteristics
  • Unit 2 Summary
  • Unit 3: Monetary Aggregates
  • M1
  • M2
  • Near Monies
  • M3
  • L
  • Unit 3 Summary
  • Unit 4: Money's History
  • Barter
  • Commodity Money
  • Metal Commodity Money
  • Fiat Money
  • Money
  • Unit 4 Summary
  • Unit 5: Scarcity
  • Efficiency
  • Monetary Policy
  • Unit 5 Summary
  • Course Home
    Money

    In this lesson, we examine my favorite economic topic -- money. In addition to being the root of all evil, money is a critical component of the macroeconomy. The basic rule is that too much money causes inflation and too little money causes unemployment. To lay the foundation for further study of money and the macroeconomy, this lesson presents the money basics, including what money is, what money does, how money is measured, and how money evolved to it's current format.

    • The first unit begins this lesson with a look at what money is (hint: anything that people use for exchanges), and money's role as a medium of exchange.
    • The main topics of the second unit are the four functions of money and the four characteristics of money.
    • The third unit then examines and compares the monetary aggregates, the official measures of money tracked by the U.S. government.
    • The history of money is the prime topic of the fourth unit, with a look at how modern fiat money evolved from self sufficiency, barter, and commodity money.
    • The fifth unit then ponders the connection between money, efficiency, and the scarcity problem, with an eye toward the use of monetary policies.

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    PERFECT COMPETITION, LONG-RUN ADJUSTMENT

    A perfectly competitive industry undertakes a two-part adjustment to equilibrium in the long run. One is the adjustment of each perfectly competitive firm to the appropriate factory size that maximizes long-run profit. The other is the entry of firms into the industry or exit of firms out of the industry, to eliminate economic profit or economic loss. The end result of this long-run adjustment is a multi-faceted equilibrium condition that price is equal to marginal cost and average cost (both short run and long run).

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    APLS

    ORANGE REBELOON
    [What's This?]

    Today, you are likely to spend a great deal of time wandering around the shopping mall wanting to buy either a rotisserie oven that can also toast bread or a flower arrangement in a coffee cup for your father. Be on the lookout for malfunctioning pocket calculators.
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    The average length of a "business lunch" is about 36 minutes.
    "Try not to become a man of success, but rather try to become a man of value. "

    -- Albert Einstein

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