Curvas de Oferta-Precio No lineales para el caso de preferencias de consumo Cuasi-lineales[Nonlinear Price-Consumption Paths for Quasilinear preferences]

In most of the Intermediate Microeconomics or Microeconomic Theory texts, when the demand of individuals subject is analyzed, especially the Price-Consumption paths and Income-Expansion paths , Examples are presented in which the utility functions correspond to regular preferences, that is, the equations describing the behavior of the curves, correspond to straight lines. The purpose of this paper is to demonstrate through a practical example, what happens in the case where the variations in the prices of any of the goods involved in the analysis (for our case two goods), simultaneously affect the quantities consumed of both goods. In microeconomics textbooks (of which there are many and very good ones) is not performed a detailed exposition of how to calculate the equations corresponding to these curves (Price Consumption path and Income Expansion path) if these do not correspond to linear functions. The document will cover the fundamental concepts that the reader faces when solving these restricted optimization problems, emphasizing the calculation method of the Price-Consumption path equation.