ROJAS FLÓREZ, L. C.; MEJÍA VELASCO, H. R.; ESTEBAN DUARTE, P. V. Conceptualization of the directional derivative from the slope of a line in space. El cálculo y su enseñanza, [S. l.], v. 12, n. 1, p. 13–26, 2019. DOI: 10.61174/recacym.v12i1.31. Disponível em: https://recacym.org/index.php/recacym/article/view/31. Acesso em: 13 nov. 2026.