Question

Now suppose a second firm, with an identical cost function, enters the market, forming a Cournot duopoly. Determine the Cournot equilibrium output for each firm

09 Jul 2025
Answer :
Word Count : 924
In the context of Intermediate Microeconomics II, the Cournot duopoly model describes a market with two firms producing a homogeneous good, deciding simultaneously and independently how much quantity to produce. Each firm chooses its output level assuming the output of the other firm is fixed. The price in the market is then determined by the total output produced by both firms, through the market demand function. In this problem, we are given that the second firm has an identical cost function as the first firm. We are to determine the Cournot equilibrium output for each firm. Let’s proceed step by step to determine the Cournot equilibrium: ### Assumptions * There are two firms: Firm 1 and Firm 2. * The product is homogeneous. * Firms have identical cost functions: Suppose the cost function for both firms is: $C(q_i) = c \cdot q_i$, where $c$ is the constant marginal cost and $i = 1, 2$. * The inverse demand function in the market is: $P(Q) = a - bQ$, where $Q = q_1 + q_2$, $a > 0$, $b > 0$. * Each firm maximizes ________ ____ ______ ____ ___ ____ _____ ___ _________ _______ ____.
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