Send the following on WhatsApp
Continue to ChatOscillation theorems for nonlinear second order differential equations with damping - https://avesis.hacettepe.edu.tr/yayin/a1c4158a-7b0a-4599-88ed-7e47e7f56f2d/oscillation-theorems-for-nonlinear-second-order-differential-equations-with-damping