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INCREASING RETURNS TO SCALE: A given proportionate increase in all resources in the long run results in a proportionately greater increase in production. Increasing returns to scale exists if a firm increases ALL resources -- labor, capital, and other inputs -- by 10%, and output increases by more than 10%. You might want to compare decreasing returns to scale and constant returns to scale.

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KINKED-DEMAND CURVE ANALYSIS

An analysis using the kinked-demand curve to explain rigid prices often found with oligopoly. The kinked-demand curve contains two distinct segments--one for higher prices that is more elastic and one for lower prices that is less elastic. Key to this analysis is that the corresponding marginal revenue curve contains three segments--one associated with the more elastic segment, one associated with the less elastic segment, and one associated with the kink. A profit-maximizing firm can then equate marginal cost to a wide range of marginal revenue values along the vertical segment of the marginal revenue curve. This suggests that marginal cost must change significantly before an oligopolistic firm is inclined to change price.

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Today, you are likely to spend a great deal of time watching the shopping channel looking to buy either a desktop calendar with all federal and state holidays highlighted or a half-dozen helium filled balloons. Be on the lookout for mail order catalogs with hidden messages.
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