MANDAL, W. A. Proof Without Words: Arithmetic Mean / Geometric Mean Inequality. Ohio Journal of School Mathematics, [S. l.], v. 80, n. 1, 2018. Disponível em: https://www.osu.tests.sfulib4.publicknowledgeproject.org/index.php/OJSM/article/view/6564. Acesso em: 29 apr. 2026.