Candan, Tuncay2024-11-072024-11-0720161072-6691https://hdl.handle.net/11480/11199This article presents sufficient conditions for the existence of nonoscillatory solutions to first-order differential equations having both delay and advance terms, known as mixed equations. Our main tool is the Banach contraction principle. © 2016 Texas State University.eninfo:eu-repo/semantics/closedAccessFixed pointNeutral equationsNon-oscillatory solutionArticle20162-s2.0-84955589093Q3