e marginal cost

Microeconomic Theory
12th Edition
ISBN:9781337517942
Author:NICHOLSON
Publisher:NICHOLSON
Chapter15: Imperfect Competition
Section: Chapter Questions
Problem 15.5P
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Two firms are competing in an infinitely repeated Bertrand duopoly. The marginal cost of both is
equal to 6. There are no fixed costs. The demand function for the good is q = 10 – p, where q is the
total quantity demanded and p the price.
(a) Find the equilibrium in the infinitely repeated game in which the two firms share the market
equally.
(b) Suppose that firm l's marginal cost falls to 0. The other firm's marginal cost is still 6. Is there
an equilibrium in the infinitely repeated game in which the two firms share the market?
Transcribed Image Text:Two firms are competing in an infinitely repeated Bertrand duopoly. The marginal cost of both is equal to 6. There are no fixed costs. The demand function for the good is q = 10 – p, where q is the total quantity demanded and p the price. (a) Find the equilibrium in the infinitely repeated game in which the two firms share the market equally. (b) Suppose that firm l's marginal cost falls to 0. The other firm's marginal cost is still 6. Is there an equilibrium in the infinitely repeated game in which the two firms share the market?
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