Bruxelles, Académie royale (impr.par Hayez) 1848 24pp., publié dans et extrait de "Mémoires couronnés et mémoires des savants étrangers, publiés par l'Académie Royale des sciences, des lettres et des beaux-arts de Belgique" Tome XXII (22, 1846 et 1847), in-4, non coupé
Reference : W57888
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"2. Bruxelles, M. Hayez, 1848, in-4°, 24 pp, published in the series ""Mémoires couronnés et mémoires des savants étrangers publiés par l'Académie Royale des Sciences, des Lettres et des Beaux-arts de Belgique"", Vol. XXII, removed from a binding."
"BERNOULLI, (JOHANN). - ESTABLISHING RELATION BETWEEN TRIGONOMETRIC AND LOGARITMIC FUNCTIONS.
Reference : 44723
(1704)
(Paris, Jean Boudot, 1704). 4to. Without wrappers. Extracted from ""Mémoires de l'Academie des Sciences. Année 1702"". Pp. 281-288 and pp. 289-297.
First printing of two importent papers on the calculus. Bernoulli shows that the substitution of some equations leads to the differential of the logarithm of an imaginary number, and since the original integral also leads to the arc tan function he had thus established a relation between the trigonometric and logarothmic functions. (Based on Kline).