Guillaume de l'Hôpital
= Guillaume de l'Hôpital
{wiki=Guillaume_de_l'Hôpital}
Guillaume de l'Hôpital (1661–1704) was a French mathematician best known for his work in calculus. He is particularly famous for the rule named after him, known as L'Hôpital's Rule, which is used to find the limit of indeterminate forms such as 0/0 or ∞/∞.