LAMBERT, JOHANN HEINRICH.

Observations Analytiques.

(Berlin, C.F. Voss, 1772. 4to. Without wrappers as extracted from "Nouveaux Mémoires de l'Academie Royale des Sciences et Belles-Lettres", Annee 1770, pp. 225-244 and 1 engraved plate.

First edtion. In this paper Lambert starts from a simple problem for a function of 2 variables x and y, then proceeds to expand the method to more difficult differentiations.

Order-nr.: 39084