Acta mathematica scientia,Series B ›› 1991, Vol. 11 ›› Issue (4): 433-441.
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Wang Mingxin1,2, Zhang Qin2
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Abstract: In this paper, we consider the following second order retarded differential equations x″(t)+cx'(t)=qx(t-σ)-lx(t-δ) (1) x″(t)+p(t)x(t-τ)=0 (2) We give some sufficient conditions for the oscillation of all solutions of Eq. (1) in the case where q, l, σ, δ are positive numbers and c is a real number. And also, we study the asymptotic behavior of the nonoscillatory solutions. If necessary, we give some examples to illustrate our results. At last, we study Eq. (2) with some conditions on p(t).
Wang Mingxin, Zhang Qin. OSCILLATION AND ASYMPTOTIC BEHAVIOR OF SOME SECOND-ORDER RETARDED DIFFERENTIAL EQUATIONS[J].Acta mathematica scientia,Series B, 1991, 11(4): 433-441.
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