CONTENT WA and demand law From preferences to utility Utility maximization Expenditure minimization

Duality Given the technology, we can obtain the cost function, are the cost function contains the same information of the technology (production function)? If the answer is \yes\, then the cost minimization behavior will indicate the technology of the firm

Aggregation and Welfare Content: Consumer's' surplus Aggregation Representation consumer

Cost Minimization Content: Definitions Properties of cost function WACM Some forms of cost functions lecture3 for Chu Kechen Honors College

Summary textbook: Varian, Hal R., 1992, Microeconomics Analysis, 3rd ed. Mas-Colell, A., M. Whinston, and J. Green, 1995, Microeconomics Theory. assignments: twice a week; Team work; Deliver on the class

Content Public goods Subscription -Efficient provision of public goods Public choice · Externality -What' s externality? - How to solute it? -What' s the efficient condition with externality

Content The“core Uniqueness of equilibrium Stability of equilibrium · Welfare

Content Pure exchange system The existence of Walrasian equilibrium The first theorem of welfare economics The second theorem of welfare economics Exchange with production

浙江工业大学：《微观经济学》课程教学资源（PPT课件）05 成本理论

Optimization See Sydsaeter(2005, Chapters 2, 3)and Chiang(1984, Chapters 9, 11, 12 and 21) Positive definite matrix Definite matrices are directly related to optimization. A symmetric matrix A is positive semi- definite(A≥0) if rAr≥0,Vx; positive definite(A>0)