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Excerpt from Annaes Scientificos da Academia Polytecnica do Porto, 1905, Vol. 1
Occupando-se da catenaria correspondente ao caso em que o fio que fôrma esta curva é solicitado por forças de attracção, dirigidas para um centro lo, actuando na razão inversa do quadrado das distancias a este centro, Marie mostrou, por processos que aqui não exporemos, que a curva pôde ser repre sentada pelas equações (1)
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