Abstract
A numerical scheme based on polynomials and finite difference method is developed for numerical solutions of two-dimensional linear and nonlinear Sobolev equations. In this approach, finite difference method is applied for the discretization of time derivative whereas space derivatives are approximated by two-dimensional Lucas polynomials. Applying the procedure and utilizing finite Fibonacci sequence, differentiation matrices are derived. With the help of this technique, the differential equations have been transformed to system of algebraic equations, the solution of which compute unknown coefficients in Lucas polynomials. Substituting the unknowns constants in Lucas series, required solution of targeted equation has been obtained. Performance of the method is verified by studying some test problems and computing E2, E\(_{\infty }\) and Erms (root mean square) error norms. The obtained accuracy confirms feasibility of the proposed technique.
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Haq, S., Ali, I. Approximate solution of two-dimensional Sobolev equation using a mixed Lucas and Fibonacci polynomials. Engineering with Computers 38 (Suppl 3), 2059–2068 (2022). https://doi.org/10.1007/s00366-021-01327-5
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DOI: https://doi.org/10.1007/s00366-021-01327-5