A small contribution from the rational theory of consumer to solving differential equations first-order inhomogeneous with initial and final conditions. Revista Eseconomía, [S. l.], v. 16, n. 54, p. 95–100, 2021. DOI: 10.29201/eseconomia.v16i54.49. Disponível em: https://www.revistaeseconomia.mx/index.php/ESE/article/view/49. Acesso em: 10 mar. 2026.