Eswari, R.Alzabut, J.Samei, M.E.Tunç, C.Jonnalagadda, J.M.2025-05-102025-05-1020222353-062610.1515/msds-2022-01492-s2.0-85134064921https://doi.org/10.1515/msds-2022-0149https://hdl.handle.net/20.500.14720/3020We consider a Rayleigh-type equation with state-dependent delay. We establish a set of new suficient conditions on the existence of at least one positive periodic solution by using the continuation theorem of coincidence degree theory. Our results not only provide a new approach but also generalize previous results. An example with graphical representations are presented to illustrate the results. © 2022 Rajendiran Eswari et al., published by De Gruyter.eninfo:eu-repo/semantics/openAccessMawhin'S Continuation TheoremPeriodic SolutionsRayleigh EquationState-Dependent DelayArticle91N/AQ3103115