The paper treats the consumer behavior after the nature of its preferences. There are analyzed in terms of Marshall demand, the perfectly substitutable, the perfectly complementary, the case of independently goods in the meaning of utility, the case of separable goods in the meaning of utility...

This paper treats the consumer's budget problem for arbitrary n goods. The analysis is based mainly on the comparison of volumes of Rn budget zones that allow for interesting conclusions on the effect of fees and taxes in relation to purchasing power.

The analysis allowed the determination in general of the consumer’s surplus or of the manufacturer’s surpluss in the case of monopoly and the determination of the allocative inefficiency in relation to the situation of perfect competition. Also, we broached the price discrimination of third...