Grateful acknowledgement is made to CICYT (Comision Intenninisterial de Ciencia y Tecnoiogia), National Plan R+D, Projects N-TXT96-2467 and N­ TXT98-1453 for its financial support. This text presents the economic theories on Utility and Production. In addition, such theories are used to explain the real problems of consumers and firms and several studies carried out by the author are displayed. Some collaboration by other professors of Economics is mentioned in the corresponding footnotes. The responsibility for errors and omissions, however, rests entirely upon tbe author. In chapters 1 and 4 of the book try to present the theory of Utility and Production. Chapter 3 presents new functional forms and two empirical applications, on demand functions and systems. In chapters 2 and 5, the main theorems and properties presented in chapters 1 and 4 are applied. Chapter 6 presents new functional forms and two empirical applications, on production and cost functions respectively.

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Introduction.- Utility and Consumer Demand Analysis: Theory of Utility and Consumer Behavior: A Comprehensive Review of Concepts, Properties and the Most Significant Theorems: Theory of Utility; Preference, Choice and Indifference Concept and Utility Function Existence; Properties of the Utility Function; Basic Theroy (Primal): Marshallian (or Walrasian) Demand Functions; Consumer Equilibrium (Dual): Hicksian (or Compensated) Demand Functions; Indirect Utility Function; Expenditure Function; Restrictions of the Demand Systems; Roy's Identity; Hotelling's Theorem (or Shepard's Lemma for Consumers); Relationships between the UMP and the EMP; The Slutsky Equation; Complementary and Substitutive Relationships.- Main Forms of utility Functions: The Cobb-Douglas Utility Function; The Utility Function of the Constant Elasticity of Substitution (CES); The Quasi-linear Utility Functions.- Study of the Econometric Applications: Demand Functions and Systems: Demand Functions; Application I for Demand Functions: Walrasian (or Marshallian) Demand Functions for Interurban Passenger Transport; Complete Demand Systems; Application II for Demand Systems: Estimation of an Almost Ideal Demand System (AIDS): Particular Disaggregation for the Main Transport Services.- Production and Firm Supply Analysis: Theory of Production, Cost and Behavior of the Firm: A Comprehensive Reformulation: Theory of the Firm; Production Possibility Set and Existence of Production Function; Properties of Production Function; The Firm's Equilibrium: Classic Demand, Profit and Direct Supply Functions; The Firm's Equilibrium (Primal A); The Firm's Equilibrium (Primal B): Marshallian Demand and Indirect Supply Functions; The Firm's Equilibrium: Input Classic Demand and Output Direct Supply Functions; The Firm's Equilibrium (Dual A); The Firm's Equilibrium (Dual B): Input Conditioned Demand and Cost Functions; Diagrammatic Representation of the Main Relationships; Joint Production; Short-Run; Reflections on the Main Relationships Designed; The Elasticity of Substitution.- Main Forms of Production and Cost Functions: The Cobb-Douglas Production Function; The CES Production Function.- Study on Econometric Applications: Production and Cost Functions: Production Functions; Application III for Production Functions: Analysis of the Returns to Scale, Elasticities of Substitution and Behavior of Shipping Production; Cost Function; Other Empirical Functions; Application IV for Cost Functions: Elasticities of Substitution and Behavior of Shipping Production.