Integral averages and the oscillations of second order ordinary differential equations. (English) Zbl 0424.34033
MSC:
34C10 | Oscillation theory, zeros, disconjugacy and comparison theory for ordinary differential equations |
34A30 | Linear ordinary differential equations and systems |
34C29 | Averaging method for ordinary differential equations |
34A34 | Nonlinear ordinary differential equations and systems |