Abstract
Aiming at the difficult problem of solving nonlinear ordinary differential equation with variable coefficients, In this paper, the definition of elastic transformation is introduced, and the elastic transformation method for solving differential equations with variable coefficients is proposed. By this method, a class of nonhomogeneous nonlinear first-order and a class of nonlinear third-order ordinary differential equations with variable coefficients can be transformed into the homogeneous linear special equations (Associated Legendre equation, Gegenbauer equation, Hypersphere equation) which the general solutions can be found. Then, according to the definition of elasticity and the general solution of the special equation, the general solution of the original differential equations are obtained. The elastic transformation method not only expands the solvable classes of ordinary differential equation, but also promotes the application of special equation. More importantly, the elastic transformation method provides a new idea for solving low-order and high-order nonlinear ordinary differential equation with variable coefficients.
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All authors contributed to the study conception and design. Material preparation. The first draft of the manuscript was written by Jie Tang. The rest of the authors have made some corrections to the article manuscript. All authors read and approved the final manuscript. All authors contributed to the study conception and design. All authors read and approved the final manuscript.
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Zheng, P., Tang, J., Leng, L. et al. Solving nonlinear ordinary differential equations with variable coefficients by elastic transformation method. J. Appl. Math. Comput. 69, 1297–1320 (2023). https://doi.org/10.1007/s12190-022-01791-2
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DOI: https://doi.org/10.1007/s12190-022-01791-2
Keywords
- Nonlinear
- Variable coefficient
- The elastic upgrading transformation method
- The elastic reducing transformation method