ABDUL KAREEM, S. Partial Derivatives : Extreme Values and Saddle Points (Modified): Partial Derivatives : Extreme Values and Saddle Points (Modified). Journal of Advanced Sciences and Nanotechnology, [S. l.], v. 1, n. 1, p. 1–6, 2026. DOI: 10.55945/joasnt.2026.1.1.1-6. Disponível em: https://joasnt.com/index.php/joasnt/article/view/80. Acesso em: 7 oct. 2026.