Functions

Tall points out that with the use of appropriate software may facilitate viewing of mathematical concepts representations with which students can develop determined significantly concept of mathematics. However, the researcher alerts for a caution that exists in the use of certain graphs plotter software which may lead the individual to develop a concept limited image seen that can be used to “draw reasonably smooth graphs given by formulae” (TALL, 1993, p. 2).

  In that sense the proposed educational document presented was developed: in order to explore the idea that a function can be defined in more than a sentence or have the domain as a proper subset of the real numbers and how you can represent these functions in GeoGebra.