2006, Sudhir R. Ghorpade, Balmohan V. Limaye, “Differentiation”, in A Course in Calculus and Real Analysis, Springer, →ISBN, section 4 (L’Hôpital’s Rule), page 131:
In this section, we shall describe a useful method for finding limits that is known as L’Hôpital’s Rule. Actually, there are several versions of L’Hôpital’s Rule and the formal statements of these will appear in the form of propositions or as a part of some remarks.
2011, Ron Larson, Bruce H. Edwards, David C. Falvo, “Appendix B: Additional Topics”, in Calculus I with Precalculus: A One-Year Course, 3rd edition, Brooks/Cole, 1 (L’Hôpital’s Rule), page A23:
In each of the examples presented in this section, L’Hôpital’s Rule is used to find a limit that exists.
2015, Robert E. Bradley, Salvatore J. Petrilli, C. Edward Sandifer, “Translators’ Preface”, in L’Hôpital’s Analyse des infiniments petits: An Annotated Translation with Source Material by Johann Bernoulli, Birkhäuser, →ISBN, page xiv:
Modern examples involving L’Hôpital’s Rule frequently involve transcendental functions, but Leibniz’ calculus at this time was only a calculus of algebraic expressions.
