On conformable differential equation with variable coefficient. Letters on Applied and Pure Mathematics, [S. l.], v. 3, n. 1, p. 35–47, 2025. DOI: 10.66147/lapm.20253128. Disponível em: https://lapmjournal.com/index.php/lapm/article/view/v3n1a28. Acesso em: 7 mar. 2026.