Theory of Exact Trigonometric Periodic Solutions to Quadratic Liénard Type Equations
- 1 University of Abomey-Calavi, Benin
 
Abstract
A mathematical theory is developed through generalized Sundman transformation to show the existence of classes of quadratic Liénard type equations which admit exact and explicit general trigonometric solutions but with amplitude-dependent frequency. The application of the theory to compute also exact and explicit general periodic solutions to nonlinear differential equations like inverted Painlevé-Gambier equations in terms of trigonometric or Jacobian elliptic functions is highlighted by some illustrative examples.
DOI: https://doi.org/10.3844/jmssp.2018.232.240
                                            
                                Copyright: © 2018 Jean Akande, Damien Kolawolé Kêgnidé Adjaï and Marc Delphin Monsia. This is an open access article distributed under the terms of the
                                                                            Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
                                                                    
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Keywords
- Liénard Equations
 - Painlevé-Gambier Equations
 - Periodic Solution
 - Generalized Sundman Transformation