Alternatives and Supplements: Fun on the Internet
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The Firm and Its Constraints

Circular Flow

A lesson on explains circular flow:

Dealing with Three Fundamental Tasks
The Production Function

Thomas McGahagan of the University of Pittsburgh explains the production function:

The Demand Curve for Output

Amosweb explains how the demand curve is the source of the marginal-revenue curve:

Supply of Resources

The concept of marginal revenue product is explained in detail at


Textbooks traditionally show how firms maximize profits using a variety of cost and revenue curves. has a good example of this approach in the form of a problem you can work:


These links were checked on July 5, 2008

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Copyright Robert Schenk

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