Paris, Imprimerie de la République, An V [1797].
Un volume in quarto (253x193 mm), (4)-viii-276 pages. reliure : Pleine basane marbrée de l'époque, dos lisse orné et doré portant le titre doré. Quelques frottements à la reliure, deux coins émoussés. Piqûres de vers marginales au coin supérieur droit.
références: D.S.B. [VII, p. 570. "The year 1797 saw the appearance of the famous work of Lagrange, 'Théorie des fonctions analytiques'. This book developed with care and completeness the characteristic definition and method in terms of 'fonctions derives,' based upon Taylor's series, which Lagrange had proposed in 1772. In it the author gave not only an attempted proof of the incorrect theorem that every continuous function may be so expanded, but also the determination of the 'fonctions derives' (or derivatives) of the elementary functions, and numerous applications to geometry and mechanics. Lagrange's 'Théorie des fonctions' was only one, but by far the most important, of many attempts made about this time to furnish the calculus with a basis which would logically modify or supplant those given in terms of limits and infinitesimals."], Norman [1258 : "Lagrange attempte to show that power series expansions are sufficient to provide a solid foundation for differential calculus."].
Prix : 1200 €