2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/105237A Matlab program is presented that computes derivative corrections in the S-dual invariant formulation for IIB graviton scattering to any order in perturbation theory. The coefficients of the four-point function are produced, pertaining to the non-logarithmic terms. The program can be modified to find coefficients of the higher-point functions. Instantons have not explicitly been included.2+11 pages, LaTeXGeneral Physicstext