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| Поле | Співвідношення |
| Title | A Note on the Graphical Representation of the Derivatives |
| Names |
Воскоглой, М.
Voskoglou, M. |
| Date Issued | 2017 (iso8601) |
| Abstract | In the article at hands an alternative definition of the concept of the derivative is presented, which makes no use of limits. This definition is based on an old idea of Descartes for calculating the slope of the tangent at a point of a curve and holds for all the algebraic functions. Caratheodory extended this definition to a general definition of the derivative in terms of the concept of continuity. However, although this definition has been used successfully by many German mathematicians, it is not widely known in the international literature, nor it is used in the school book texts. After presenting Caratheodory’s definition, the article closes by describing methods for calculating the derivative at a point of a function y = f(x) with the help of a suitably chosen table of values of f(x), and for designing of the graph of the derivative function f΄(x) given the graph, but not the formula, of f(x). These methods are based on the graphical representation of the derivative, which should be reclaimed better in general for teaching purposes. |
| Genre | Article |
| Topic | teaching/learning the derivatives |
| Identifier | Voskoglou, M. A Note on the Graphical Representation of the Derivatives [Текст] / M. Voskoglou // Фізико-математична освіта : збірник наукових праць / Міністерство освіти і науки України, Сумський державний педагогічний університет імені А. С. Макаренка, Фізико-математичний факультет ; редкол.: В. Ю. Сторіжко, Ф. М. Лиман, І. О. Мороз [та ін.]. – Суми : Вид-во СумДПУ імені А. С. Макаренка, 2017. – Вип. 2 (12). – С. 9–16. |