RESKINA; SARAGIH, S.; SUANTO, E.; MAIMUNAH. Student Errors Analysis Problem-Solving based Castolan Theory on Relations and Functions Material. Numerical: Jurnal Matematika dan Pendidikan Matematika, [S. l.], v. 7, n. 1, p. 157–166, 2023. DOI: 10.25217/numerical.v7i1.2895. Disponível em: https://journal.iaimnumetrolampung.ac.id/index.php/numerical/article/view/2895. Acesso em: 26 feb. 2026.