Structure Describe budget constraint -Algebra Graph Describe changes in budget constraint Government programs and budget constraints on- -linear budget lines

Structure Rational constrained choice Computing ordinary demands Interior solution内在解) Corner solution(角点解) “Kinky\ solution Example: Choosing taxes

Structure Present and future values Intertemporal budget constraint Preferences for intertemporal consumption Intertemporal choice Comparative statics Valuing securities

Exchange Economies (revisited) No production, only endowments,so no description of how resources are converted to consumables. General equilibrium: all markets clear simultaneously. 1st and 2nd Fundamental Theorems of Welfare Economics

一、1(5分)当边际产量递减时,规模报酬也一定递减

Revealed Preference Analysis Suppose we observe the demands (consumption choices) that a consumer makes for different budgets. This reveals information about the consumer's preferences. We can use this information to

Structure Describing technologies Production set or technology set Production function Isoquant Marginal product Returns to scale Technical rate of substitution well- behaved technologies Long run and short run

Structure Types of cost curves Fixed, variable and total cost functions Average fixed, average variable and average cost functions Marginal cost functions Marginal and variable cost functions Marginal and average cost functions Short run and long run cost curves

Structure on -collusive- moves Simultaneous moves Quantity competition -Cournot model Price competition- Bertrand model Sequential moves Quantity leadership- Stakelberg model Price leadership Collusion

Structure Definition Consumption externality Production externality The tragedy of commons