Periodic Solutions For a Kind of Neutral Rayleigh Equations With Variable Parameter

摘要

Employing the coincidence degree theory of Mawhin we obtain some existence results of periodic solutions for a type of neutral Rayleigh equation with variable parameter ((x(t) - (t)x(t - τ))″ + f(x′(t)) + g(x(t - γ(t))) = e(t). Equation It is worth noting that c(t) is no longer a constant which is different from the corresponding ones of past work. Furthermore, our results generalize corresponding work in the past.