The Boundedness Of All Solutions For A Class Of Two-order Differential Equation

In this paper we study the boundedness of all solutions for two-order differential equationwhere α,β are positive constants, Under some increasing restrictions of ψ(x') and φ(t,x) ,we abtain the boundedness of all solutions for the Eq.(1) by a small twist theorem, that is, if x(t) is a solution, then it exists for all t∈R and...