BELLO KASEEM, S. . DIFFERENTIAL ITEM FUNCTIONING ANALYSIS OF 2022 AND 2023 ALGEBRA AND ELEMENTARY TRIGONOMETRY EXAMINATIONS AT FEDERAL POLYTECHNIC DAURA, KATSINA STATE, NIGERIA. Gusau Journal of Entrepreneurship Development, [S. l.], v. 3, n. 2, p. 36–42, 2025. DOI: 10.57233/gujed.v3i2.03. Disponível em: https://gujed.com.ng/index.php/gujed/article/view/93. Acesso em: 16 apr. 2026.