OPTIMAL QUADRATURE FORMULA WITH DERIVATIVE FOR APPROXIMATING INTEGRALS AND SOLVING INTEGRAL EQUATIONS IN SOBOLEV SPACE. International Journal of Political Sciences and Economics, [S. l.], v. 5, n. 6, p. 138–147, 2026. DOI: 10.55640/. Disponível em: https://ijmri.de/index.php/ijpse/article/view/7962. Acesso em: 9 jun. 2026.