THINH, Pham Ngoc. Using Determinants for Determining Extreme Values of a Function of One Variable, Two Variables and Three Variables. RA Journal Of Applied Research, [S. l.], v. 7, n. 12, p. 2781–2785, 2021. DOI: 10.47191/rajar/v7i12.17. Disponível em: http://rajournals.in/index.php/rajar/article/view/803. Acesso em: 22 nov. 2024.