Ecos3005: Tutorial 4
Hello, dear friend, you can consult us at any time if you have any questions, add WeChat: daixieit
Ecos3005: Tutorial 4
For discussion Week 5
Question 1: Price Competition
Two firms compete by simultaneously choosing price in a single period. Both firms produce identical products. All consumers buy from the cheapest firm. [Technical assumption: If both firms charge the same price, consumers buy from Firm 1.]
• Market demand is given by Q(p) = 1000 − 1000p, where Q = q1 + q2 .
• The firms have no fixed costs.
• Firm 1 has constant marginal costs of 0.2 and Firm 2 has constant marginal costs of 0.3. Identify any Nash equilibria to the game, and profits at the NE.
Question 2: Price Competition
Firms 1 and 2 compete by simultaneously choosing price, subject to a capacity constraint. Market demand is given by Q(p) = 1200 − 1000p, where Q = q1 + q2 . Each firm has constant marginal costs of ci = 0.2, and capacity of Ki = 400.
1. If one of the firms were to be a monopolist, calculate its profit-maximising monopoly price.
2. Suppose that Firm 1 decides to relent (that is, set a higher price than Firm 2). What price would Firm 1 choose? What would its profits be?
3. At what rival price is each firm indifferent between relenting and undercutting?
4. Outline the reaction functions for each firm.
Question 3: Price Competition
Firms 1 and 2 compete by simultaneously choosing price, subject to a capacity constraint. Market demand is given by Q(p) = 1000 1000p, where Q = q1 + q2. Each firm has constant marginal costs of 0.4, and capacity of 600.
1. Calculate the profit-maximising monopoly price.
2. Identify the reaction functions for each firm.
Question 4: Price Competition
Firms 1 and 2 compete by simultaneously choosing price, subject to a capacity constraint. Market demand is given by Q(p) = 1000 1000p, where Q = q1 + q2. Each firm has constant marginal costs of 0.2, and capacity of 200.
1. What price would a monopolist set?
2. Solve for the Nash equilibrium prices (if any).
2022-09-26