NGUYEN, Tien Da; NGUYEN, Ngoc Anh; PHAN, Kieu Anh. Students’ problem-solving performance in geometric extremum tasks through an integrated vector and analytical approach. Jurnal Elemen, [S. l.], v. 12, n. 3, p. 809–826, 2026. DOI: 10.29408/jel.v12i3.34344. Disponível em: https://e-journal.hamzanwadi.ac.id/index.php/jel/article/view/34344. Acesso em: 6 sep. 2026.