O różnych sposobach definiowania wartość bezwzględnej
Abstract
In this article we present some didactic ideas of introducing theabsolute value of a real number by means of functional equations and aninequality. The basic properties of the absolute value of a real number arewritten as functional equations and an inequality. The function "absolutevalue" is a solution of a suitable functional equation or an inequality.
References
Kuczma, M.: 1985, An Introduction to the Theory of Functional Equations and Inequalities, PWN, Warszawa, Kraków, Katowice.
Major, J., Powązka, Z.: 2006, Uwagi dotyczące pojęcia wartości bezwzględnej liczby rzeczywistej, Annales Academiae Paedagogicae Cracoviensis Studia ad Didacticam Mathematicae Pertinentia I, 163-185.
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