讲义 垄断.pptx

文档介绍：StructureWhatcausesmonopolyProfit-maximizingchoicesofmonopolyMarkuppricingTaxingamonopolyInefficiencyofmonopolyNaturalmonopoly(自然垄断)’sdemandcurveisthe(downwardsloping),y$/outputunitp(y)Higheroutputycausesalowermarketprice,p(y).Whatcausesmonopolies?Alegalfiat;;;;;,Whatoutputlevely*maximizesprofit?Profit-MaximizationAttheprofit-maximizingoutputlevely*so,fory=y*,y$R(y)=p(y)yProfit-Maximization$R(y)=p(y)yc(y)Profit-MaximizationyProfit-Maximization$R(y)=p(y)yc(y)yP(y)Profit-Maximization$R(y)=p(y)yc(y)yP(y)y*