The notion of a function is primordial in teaching mathematics. The inverse of a function has a well-known mathematical definition. In case of real functions, there is a symmetry relation between the graphs of the function and its inverse, even this relation can be visualised using CAS tools like GeoGebra. However, it is useful to clarify what are the discrepancies between mathematical definition of inverse function, the commands like Invert and NInvert when using GeoGebra as function graphing tool, and the symmetry commands of the software. Some examples to be presented are aimed to underline the right use of ICT and CAS, as very efficient tools in education, the same time to attract the attention on the possible limits, failures in applying them. It is a need for advanced critical thinking both for teachers and students, when applying these tools.

inverse of a function, GeoGebra.

Received: June 4, 2022; Accepted: July 9, 2022; Published: July 16, 2022

How to cite this article: Péter Körtesi and Zsuzsanna Katalin Szabó, Inverse of a function – mathematical and ICT tool approach, Far East Journal of Mathematical Education 23 (2022), 1-6. http://dx.doi.org/10.17654/0973563122008

This Open Access Article is Licensed under Creative Commons Attribution 4.0 International License

References:

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