下下礼拜要参加研究所考试了，这边有一个问题困扰我 恳请各位能帮帮我。。。 －－－－－－－－－－－－－－－－－－－－－－－－－－ Two firms compete by choosing price. their demand functions are Q1=20-P1+P2 and Q2=20+P1-P2 where P1 and P2 are the price charged by each firm respectively and Q1 and Q2 are the resulting demands. Note that the demand for each good depends only on the difference in price; if the two firms colluded and set the same price, they could make that price as high as they want, and earn infinite profits. Marginal costs are zero. 1. Suppose the two firms set their prices at the same time. Find the resulting Nash equilibrium. What price will each firm charge, how much will it sell, and what will its profit be? 2. Suppose Firm 1 sets its price first and then Firm 2 sets its price. What price will each firm charge, how much will it sell, and what will its profit be? 这是在讲秦柏霖勾结是吗??? 怎麽算啊???? --

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