PENERAPAN KONSEPSI DIFERENSIASI PARSIAL DALAM UPAYA ANALISIS PERMASALAHAN SOSIAL. Jurnal Pengajaran Matematika dan Ilmu Pengetahuan Alam, [S. l.], v. 1, n. 1, p. 54–58, 1993. DOI: 10.18269/jpmipa.v1i1.34884. Disponível em: https://ejournal-science.upi.edu/jpmipa/article/view/309. Acesso em: 1 jul. 2026.