Özet:

The purpose of this study is to identify undergraduates’ perceptions of domain, codomain and image of domain of functions and their preferences in using different representations of the function concept. To do this, an open ended questionnaire linked to the function concept was asked to 77 first graders at a university during the fall semester of the 2013-2014 academic year . In this paper, only results of the analysis of students’ answers to one question is presented. The results of this study revealed that students preferred verbal, diagram, graph and numerical representations of functions. In addition, it was seen that students had lack of knowledge about the concept of function and classification of numbers as well as had problems translating among multiple representations of the function concept and using of mathematical language correctly

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