There is no an explicit solution for is proposed problem in 1963 by Lorentz. Generally, this system of differentials equations is solved by the method oftrapezoidal integration with extrapolation of Richardson or by the improved method of Euler. In this work an altemative solution by the method of Runge Kutta Fehlberg ís presented, which requires only six evaluat.ions ofthe function, thus reducing the time ofcalculation.

Se relata una posible solución al incremento de ruido esperado por el flujo automovilístico producido por las obras del intercambio vial de las Avenidas Universitaria y Venezuela y que no ha sido considerada en la propuesta inicial que viene siendo ejecutada por la Municipalidad de Lima Metropolitana. Las barreras sonoras son muy comunes en los países desarrollados, pero vemos que dicha tecnología no ha sido introducida en nuestro medio y esta obra al estar colindante a la principal y más importante universidad peruana merece esta mejora para no afectar los procesos de enseñanza aprendizaje (PEA).

A possible solution to the increase of noise waited for by the automobile flow produced by works of the road interchange of the Avenues Universitaria and Venezuela and who have not been considered in the initial proposal that comes being executed by the Metropolitan Municipality of Lima is related. The sonorous barriers are very common in the developed countries, but we see that this technology has not been introduced in our means and this work when adjacent being to the main and more important Peruvian university deserves this improvement not to affect the education processes learning (EPL).