Enhanced shifted Tchebyshev operational matrix of derivatives: two spectral algorithms for solving even-order BVPs

Journal of Applied Mathematics and Computing - Tập 69 - Trang 3893-3909 - 2023
M. Abdelhakem1,2,3, Dina Abdelhamied4,3, M. El-kady1,2,3, Y. H. Youssri5
1Mathematics Department, Faculty of Science, Helwan University, Cairo, Egypt
2Basic Science Department, School of Engineering, Canadian International College, New Cairo, Egypt
3Helwan School of Numerical Analysis in Egypt (HSNAE), Cairo, Egypt
4Department of Basic Science, Faculty of Engineering, May University in Cairo (MUC), Cairo, Egypt
5Department of Mathematics, Faculty of Science, Cairo University, Giza, Egypt

Tóm tắt

Herein, new orthogonal polynomials have been generated from shifted Chebyshev polynomials that fulfill a given set of homogeneous boundary conditions and the necessary formulae have been established. Moreover, an integer order derivative operational matrix has been introduced. Then, the presented novel polynomials are used together with the two spectral methods, namely, the Galerkin and Tau methods, as the basis functions. The convergence and error analyses were introduced and proved. Finally, some even-order boundary value problems (BVPs) have been approximated using the presented method.

Tài liệu tham khảo

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