摘要

A class of second-order forced neutral delay differential equation with mixed nonlinearities (r(t)|x'(t) + px'(t - sigma)|(alpha-1)(x'(t) + px'(t - sigma)))' + q(0)(t)|x(tau(0)(t))|(alpha-1)x(tau(0)(t)) + Sigma(n)(i=1)q(i)(t)|x(tau i(t))|(beta i=1)x(tau(i)(t)) = e(t)sgn(x(t)) is investigated in this paper. Using a new method, we obtain some new sufficient conditions for the oscillation of the above equation, and some known oscillation criteria have been extended.