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Derivadas de Dini

Resultados e aplicações
Authors: Zage, Esmael António;

Derivadas de Dini

Abstract

Neste trabalho lançámos o desafio de estudar derivadas de Dini, o porquê do seu aparecimento e algumas aplicações. Para abordarmos este assunto de uma forma coerente foi necessário traçar um caminho no qual tivemos de recordar alguns conceitos lecionados no Ensino Secundário, como por exemplo: sucessões e subsucessões, limite, função contínua, função diferenciável, monotonia e extremos de uma função; assim como os resultados relacionados. Mas foi também necessário introduzir assuntos que vão além do Ensino Secundário, como limite superior e limite inferior, funções semicontínuas. Para aplicar as derivadas de Dini recordamos os Teoremas de Rolle e de Lagrange, para os quais apresentamos uma generalização envolvendo as derivadas de Dini. Tal como em qualquer curso de Cálculo, depois do cálculo diferencial surge a integração, pois isso no Capítulo final consta os conhecidos integrais de Riemann e Lebesgue e a construção do integral de Henstock-Kurzweil.

In this work we launched the challenge of studying derivatives of Dini, the reason for its appearance and some applications. In order to approach this subject in a coherent way, it was necessary to draw a path in which we had to remember some concepts taught in Secondary Education, such as: sequences and subsequences, limit, continuous function, differentiable function, monotony and extremes of a function; as well as related results. But it was also necessary to introduce subjects that go beyond Secondary Education, as upper limit and lower limit, semicontinuous functions. To apply the Dini derivatives we recall the Rolle and Lagrange Theorems, for which we present a generalization involving the Dini derivatives. As in any Calculus course, after the differential calculus arises integration, for this in the final Chapter consists of the well-known integrals of Riemann and Lebesgue and the construction of the Henstock-Kurzweil integral.

Country
Portugal
Related Organizations
Keywords

Integral, Derivada, Domínio/Área Científica::Ciências Exatas::Matemáticas, Integral de Henstock-Kurzweil, Derivadas de Dini

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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