Guillaume De l'Hôpital
died 309 years ago
2nd February 1704
Guillaume De l'Hôpital
De L'Hôpital wrote the first textbook on calculus in 1696 which consisted of the lectures of his teacher Johann Bernoulli.
Find out more at:
http://www-history.mcs.st-andrews.ac.uk/Mathematicians/De_L'Hopital.html