Tunç, C.2025-05-102025-05-1020121813-73852-s2.0-84862020047https://hdl.handle.net/20.500.14720/60This paper studies the instability of zero solution of a certain fifth order nonlinear delay differential equation. Sufficient conditions for the instability of zero solution of the equation considered are obtained by the Lyapunov-Krasovskii functional approach. © 2012 InforMath Publishing Group.eninfo:eu-repo/semantics/closedAccessDelay Differential EquationFifth OrderInstabilityLyapunov-Krasovskii FunctionalInstability for Nonlinear Differential Equations of Fifth Order Subject To DelayArticle122N/AQ3207214