Solving fractional variable-order differential equations of the non-singular derivative using Jacobi operational matrix. Journal of the Nigerian Society of Physical Sciences, [S. l.], v. 5, n. 2, p. 1221, 2023. DOI: 10.46481/jnsps.2023.1221. Disponível em: https://journal.nsps.org.ng/index.php/jnsps/article/view/1221.. Acesso em: 24 feb. 2024.