Improving Accuracy Through the Three Steps Block Methods For Direct Solution of Second Order Initial Value Problem Using Interpolation and Collocation Approach. KASU JOURNAL OF MATHEMATICAL SCIENCE (Maths Access), [S. l.], v. 1, n. 1, p. Page 12–21, 2025. Disponível em: https://mathsaccess.org.ng/index.php/kjms/article/view/12. Acesso em: 10 jun. 2026.