Yağmurlu N.M.Uçar Y.Başhan A.2024-08-042024-08-0420192147-1630https://doi.org/10.37094/adyujsci.526264https://search.trdizin.gov.tr/yayin/detay/430140https://hdl.handle.net/11616/91905In this paper, quintic B-spline differential quadrature method (QBDQM) has been used to obtain the numerical approximation of the combined Korteweg-de Vries and modified Korteweg-de Vries equation (combined KdV-mKdV). The efficiency and effectiveness of the proposed method has been tested by computing the maximum error norm L? and discrete root mean square error L2 . The newly found numerical approximations have been compared to available numerical approximations and this comparison has shown that the proposed method is an efficient one for solving the combined KdV-mKdV equation. We have also carried out a stability analysis. © 2019, Adiyaman University. All rights reserved.eninfo:eu-repo/semantics/openAccessCombined KdV-mKdV equationDifferential quadrature methodPartial differential equationsQuintic B-SplinesStrong stability-preserving Runge-Kutta methodArticle9238640310.37094/adyujsci.5262642-s2.0-85093536844N/A430140