Aslanov, AfganAslanov, Afgan2026-01-312026-01-3120111307-38181307-3826https://hdl.handle.net/20.500.12662/10345In this article, a power series solution for the Lane-Emden equation for polytropic index n = 3 has been developed. We constructed a recurrence relation for the components of the series solution and established that the convergence radius is at least  eninfo:eu-repo/semantics/openAccessEngineeringMühendislikArticle591514