%0 Journal Article %T Necessary and Sufficient Conditions for Oscillations of the Generalized Liénard Systems %A Hongtao Zhang %A Xiaolin Liu %A Ping Yan %J Applied Mathematics %P 391-405 %@ 2152-7393 %D 2024 %I Scientific Research Publishing %R 10.4236/am.2024.156023 %X In this paper, we study the second-order nonlinear differential systems of Liénard-type x ˙ = 1 a( x ) [ h( y )F( x ) ] , y ˙ =a( x )g( x ) . Necessary and sufficient conditions to ensure that all nontrivial solutions are oscillatory are established by using a new nonlinear integral inequality. Our results substantially extend and improve previous results known in the literature. %K Generalized Lié %K nard System %K Nonlinear Integral Inequality %K Oscillation %U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=134066