Business
Business, 24.04.2020 00:16, KindaSmartPersonn

Each of two firms, firms 1 and 2, has a cost function C(q) = 1 2 q; the demand function for the firms' output is Q = 1.5-p, where Q is the total output. Firms compete in prices. That is, firms choose simultaneously what price they charge. Consumers will buy from the firm offering the lowest price. In case of tying, firms split equally the demand at the (common) price. The firm that charges the higher price sells nothing. (Bertrand model.)

(a) Formally argue that there could be no equilibrium in prices other than p1 = p2 = 1 2.

(b) Solve the same problem, but this time assuming that firms compete in quantities.

Now, suppose that firm 1 has a capacity constraint of 1/3. That is, no matter what demand it gets, it can serve at most 1/3 units. Suppose that these units are served to the consumers who are willing to pay the most. Thus, even if it sets a price above that of firm 1, firm 2 may be able to sell some output.

(c) Obtain the (residual) demand of firm 2 (as a function of its own price, p2) assuming that the other firm indeed sets a lower price and sells 1/3 units.

(d) Find the optimal price for firm 2, and so the optimal output.

(e) Expecting this output of firm 2, if now firm 1 could increase output at a cost (per unit) of 1 2, would it be interested in doing so? What does this and your answer in (b), for instance, tell you about which is a better model of oligopoly, competition in prices or competition in quantities?

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Each of two firms, firms 1 and 2, has a cost function C(q) = 1 2 q; the demand function for the firm...

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