Abstract
The nth order differential equation x + c (t )x + ƒ( t,x) = e(t),n>3 is
considered. Using the Leray-Schauder principle, it is shown that under certain
conditions on the functions involved, this equation possesses a periodic solution.
Abstract
The nth order differential equation x + c (t )x + ƒ( t,x) = e(t),n>3 is
considered. Using the Leray-Schauder principle, it is shown that under certain
conditions on the functions involved, this equation possesses a periodic solution.
)