The paper makes an analysis between the two effects, considering the general case of an Allen utility function. We can say that about economics that it is a relatively young science, economic and social phenomena we find debated in philosophical thinking of Hesiod Xenophon, Plato, Aristotle. These phenomena were only economic management rules of common affairs of the city. Thus, the study of the economy began to emerge timidly, gaining not only the form that we know it today, but also the importance for a developed society, the very cornerstone of its.
