Incidencia de los Criterios Algebraicos para graficar funciones racionales de segundo grado, aplicado a estudiantes de las Escuelas de Telecomunicaciones y Control, de la Facultad de Informática y Electrónica.

Abstract

The present research is focused on the incidence of Algebraic Criteria for graphing rational functions of second degree, applied to 21 students from Engineering School in telecommunications and networks and 37 control and industrial networks, Computer Science and Electronics Faculty. Some algebraic criteria was used to achieve the goal of graphing rational functions of second grade that organize them in the following manner: first calculated the domain and the image of the function, of the restrictions is obtained the asymptotes; then the fundamental points which are divided into: the breakpoints with the axes and the critical points; the signs of the function is evaluated and finally these results are represented in the Cartesian plane. It is detected that the values of “y” that are included in the ranges that make up the image, corresponding to the maximum or minimum of function, no need of derive the function, their critical points are obtained. Applies a test of two questions evaluated on ten points, students first semester before and after knowing the new methodology and obtained that telecommunications students improve 58.33% and control 50.73%, the new method positively influences students learning; It is suggested to socialize the method with the teachers of mathematics of FIE.