In this paper, we investigate a class of higher order nonlinear neutral differential equations with forced term.By using Krasnoselskii's fixed point theorem and analytical technique, new necessary and sufficient conditions are obtained for every bounded solution which either oscillates or tends to zero. In particular, the obtained results improve some known results and two examples are given to show the applications of the results.
LI Jing
,
CAI Hai
,
WANG Peiguang
. Oscillation of higher order nonlinear neutral differential equations with forced term[J]. Journal of Hebei University(Natural Science Edition), 2019
, 39(2)
: 118
-123
.
DOI: 10.3969/j.issn.1000-1565.2019.02.002
[1] LADDE G S,LAKSHMIKANTHAM V,ZHANG B G. Oscillation theory of differential equations with deviating arguments[M]. New York:Dekker,1987.
[2] AGARWAL RP,BOHNER M,LI W T. Nonoscillation and oscillation theorem for functional differential equations[M]. New York:Dekker,2004.
[3] PARHI N. Oscillations of higher order differential equations of neutral type[J]. Czech Math J,2000,50(1):155-173. DOI:10.1023/A:1022405707349.
[4] AGARWAL P R,GRACE S R. The oscillation of higher order differential equations with deviating arguments[J]. Comput Math Appl,1999,38(3-4):185-199. DOI:10.1016/s0898-1221(99)00193-5.
[5] 刘有俊,张建文,燕居让. 带分布时滞高阶中立型微分方程非振动解的存在性[J]. 应用数学学报,2015,38(2):235-241.
[6] YILMAZ SAHINER Y,ZAFER A. Bounded oscillation of nonlinear neutral differential equations of arbitrary order[J]. Czechoslovak Math J,2001,51(1):185-195. DOI:10.1023/A:1013763409361.
[7] CANDAN T,DAHIYA R S. Oscillation behavior of higher order neutral differential equations[J]. Appl Math Comput,2005,167(2):1267-1280. DOI:10.1016/j.amc.2004.08.037.
[8] OU C H,WONG JAMES S W. Forced oscillation of nth-order functional differential equations[J]. J Math Anal Appl,2001,262(2):722-732. DOI:10.1006/jmaa.2001.7614.
[9] DAHIYA R S,AKINYELE,OLUSOLA. Oscillation theorems of N th-order functional differential equations with forcing terms[J]. J Math Anal Appl,1985,109(2):325-332. DOI:10.1016/0022-247X(85)90153-2.
[10] HAMEDANI G G. Oscillatory behavior of nth order forced functional differential equations[J]. J Math Anal Appl,1995,195(1):123-134. DOI:10.1006/jmaa.1995.1346.
[11] 林文贤. 一类高阶中立型方程的强迫振动性[J]. 应用泛函分析学报,2007,9(2):117-120.
[12] ZHOU X L,YU RONG. Oscillatory behavior of higher order nonlinear neutral forced differential equations with oscillating coefficients[J]. Comput Math Appl,2008,56(6):1562-1568. DOI:10.1016/j.camwa.2008.03.006.
[13] BOLAT Y,AKIN O. Oscillatory behaviour of higher order neutral type nonlinear forced differential equations with oscillating coefficients[J]. J Math Anal Appl,2004,290(1):302-309. DOI:10.1016/j.jmaa.2003.09.062.