Oscillation of second-order nonlinear noncanonical differential equations with deviating argument

The purpose of this paper is to study the second-order nonlinear noncanonical differential equation ${\left(r\left(t\right)y^{\prime }\left(t\right)\right)}^{\prime }+p\left(t\right)f\left(y\left(\tau \left(t\right)\right)\right)=0$under the condition ${\int }_{}^{\infty }\frac{1}{r\left(t\right)}\mathrm{d}t<\infty$. Contrary to most existing results, oscillation of the studied equation is attained via only one condition. We consider both delay and advanced differential equations. A particular example of Euler type equation is provided in order to illustrate the significance of our main results.