, Volume 55, Issue 1-3, pp 103-132

Images of the limit of function formed in the course of mathematical studies at the university

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The paper is based on extensive research carried out on students of mathematics who had completed a university course of calculus. The basic purpose of the research was to determine the students' images of the concept of limit, that is to find out their associations, conceptions and intuitions connected with limits and to determine the degree of their efficiency and the sources of their formation. To achieve the objectives an expanded set of selected problems — simple but not quite standard — and various other research instruments were used. Several classes of images of the limit concept have been identified and described, according to their main foci: neighborhoods, graph approaching, values approaching, being defined at x0, limit of f atx0 equals f(x0), and algorithms.

This revised version was published online in October 2005 with corrections to the Cover Date.