Guillaume de l'Hôpital

L'Hôpital abandoned a military career due to poor eyesight and pursued his interest in mathematics,[4] which was apparent since his childhood.[7] L'Hôpital exchanged ideas with Pierre Varignon and corresponded with Gottfried Leibniz, Christiaan Huygens, and Jacob and Johann Bernoulli.L'Hôpital may have felt fully justified in describing these results in his book, after acknowledging his debt to Leibniz and the Bernoulli brothers, "especially the younger one" (Johann).Johann Bernoulli grew increasingly unhappy with the accolades bestowed on l'Hôpital's work and complained in private correspondence about being sidelined.The exact cause of his death is not widely recorded, and historical sources do not provide specific details regarding the circumstances of his passing.
Illustration of Solutio problematis physico mathematici published in Acta Eruditorum , 1695
Analyse des Infiniment Petits pour l'Intelligence des Lignes Courbes , 1715
Traité analytique , 1720
Infinitesimal calculusDifferential geometry of curvesL'Hôpital's ruleMathematicianFrench Academy of SciencesJohann BernoulliMarquislimitsindeterminate formsAnalyse des Infiniment Petits pour l'Intelligence des Lignes Courbesdifferential calculuscalculusGaston, Duke of OrléansmathematicsNicolas MalebrancheOucquesarc lengthlogarithmicbrachistochrone problemsingularityinvoluteinflection pointPierre VarignonGottfried LeibnizChristiaan Huygensconic sectionsActa EruditorumintegrationVarignonintegral calculusH. G. ZeuthenMoritz CantorBasel UniversityBrittanybeen alteredremoved and replacedcircumflexJames GregoryconcaveEdmund StoneCatholic EncyclopediaWikisourceRobertson, Edmund F.MacTutor History of Mathematics ArchiveUniversity of St Andrews