【摘要】 本文利用不等式方法讨论了二阶微分方程(a(t)u’(t) )’ +f(t,u ,u’ ,∫t1 g(t,s,u(s) )ds) =0的解的有界性与渐进性质 ,所得结果包含和改进了前人的某些结果 .更多还原

【Abstract】 The boundedness and asymptotic characteristic of solutions of second order nonlinear differential equation (a(t)u′(t))′+f(t,u,u′,∫ t 1g(t,s,u(s) d s)=0 is considered by using the integral ineguality. And the results improve some of the previous results.更多还原