On the oscillation of delay differential equations with real coefficients
H. A. Agwo1
Received30 Aug 1996
Revised13 Apr 1998
Abstract
A set of necessary conditions and another set of sufficient conditions for the oscillation of all the solutions of x˙(t)+∑i=1npix(t−τi)=0,wherepi∈ℝ,τi∈ℝ+,i=1,2,…,n(*) are proved.