The first theory of integration was developed by Archimedes in the 3rd century BC with his method of quadratures, but this could be applied only in limited circumstances with a high degree of geometric symmetry.
Den første teori herom udvikledes af Archimedes i det 3. århundrede f.v.t. med hans kvadraturer, men denne kunne kun anvendes i få situationer med en høj grad af geometrisk symmetri.