Introdução à teoria do consumidor[Introduction to the consumer theory]

This textbook supports undergraduate microeconomics students. In Chapter 1, it presents the market as three Laws of Nature: i) that supply function is the result from the decision of the sellers, ii) that demand function is the result from the decisions of buyers; iii) that the market balance the decisions of buyers with that of sellers. This chapter motivates chapter 2, which rationalizes the existence of the demand function from the Consumer Theory that assumes that consumers maximize a utility function under the income restriction and market prices.