PURNAMA, Mohammad Dian; YULIANTO, Ilyasa Pahlevi Reza; SAMPOERNA, Rizky. Geometric Brownian Motion on the Prediction of Foreign Exchange Rate: A Study on Indonesian Rupiah Rate. Jurnal Matematika, [S.l.], v. 15, n. 1, p. 13-22, june 2025. ISSN 2655-0016. Available at: <https://ojs.unud.ac.id/index.php/jmat/article/view/115006>. Date accessed: 14 oct. 2025. doi: https://doi.org/10.24843/JMAT.2025.v15.i01.p182.