Bakır, YaseminMert, Oya2023-04-202023-04-2020220129-18311793-6586https://doi.org/10.1142/S0129183122501352https://hdl.handle.net/20.500.11776/11009The Haar wavelet collocation approach (HWCM) is an impressive numerical method for solving linear initial value problems when compared to the existing numerical methods (Adomian decomposition method (ADM) & Runge-Kutta method (RK4)). The objective of this study is to use the Haar-wavelet technique, Adomian decomposition technique (ADM) and Runge-Kutta (RK4) method to achieve the numerical solution of second-order ordinary differential equations. The proposed methods are applied to three different problems and the numerical results show that the HWCM has better agreement with analytic solutions than the other numerical methods.en10.1142/S0129183122501352info:eu-repo/semantics/closedAccessHaar WaveletAdomian Decomposition MethodRunge-Kutta MethodCollocation PointHaar Wavelet MethodNumerical-SolutionArticle3310Q2WOS:000843535500005