李安纳特方程的稳定性和有界性

§ 1 .　Introduction　　Recently,Li啨ｎａｒｄ typeequationhasbeenwidelyinvestigated ,manyexcellentresultshavebeenobtained .In [1],theauthorhasinvestigatedLi啨ｎａｒｄ typeequation¨x +f1 (x) x +f2 (x) x2 +g(x) =0 ( 1)andadtainedmanyresultsonthequalitativebehaviorofequation ( 1) .FortheretardedLi啨ｎａｒｄ typeequation¨x+f1 (x) x+f2 (x) x2 +φ(x) +g(x(t -h) ) =0 ,( 2 )wherehisanonnegativeconstant,f1 ,f2 ,φandgarecontinuousfunctionsonR ,theauthorsin [2 ]haveinvestigatedstabilityandbounde…     

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