the authors have made a discussion over the asymptotic behavior of non-oscillatory solutions to first-order neutral differential equation with forcing term
obtaining the sufficient conditions for every non-oscillatory solutions to the equation hereinabove tends to zero when t tends to infinity(t→∞).This finding has generalized the viewpoint that all the solutions to first-order neutral differential equation are oscillatory
and that the solutions tend to 0/±∞ when t tends to infinity.