U ovom završnom radu upoznat ćemo se s numeričkom integracijom. Glavni dio ovog rada bit će baziran na metodama numeričke integracije, točnije Newton – Cotesovoj formuli te ćemo detaljnije obraditi njene posebne slučajeve, trapezno pravilo i Simpsonovo pravilo, koje dolaze od Newton – Cotesove formule. Spomenut ćemo i jednu metodu otvorene Newton – Cotesove formule.In this final paper we will get knowledge about numerical analysis. The main part of this paper will be based on numerical integration methods, more precisely Newton – Cotes formula, then we will further elaborate its special instances, trapezoidal rule and Simpson’s rule, that come from the Newton – Cotes formula. We will mention one method of open Newton – Cotes formula