潍坊学院学报
濰坊學院學報
유방학원학보
JOURNAL OF WEIFANG UNIVERSITY
2012年
2期
42-43
,共2页
时滞微分方程%正解%非负解
時滯微分方程%正解%非負解
시체미분방정%정해%비부해
delay differential equations%positive solutions%nonnegativity
本文给出了一类时滞微分方程解为正解的充分条件,为了应用方便,还研究了在比较简单条件下有正解的情况,并说明了时滞对方程解的非负性的影响。
本文給齣瞭一類時滯微分方程解為正解的充分條件,為瞭應用方便,還研究瞭在比較簡單條件下有正解的情況,併說明瞭時滯對方程解的非負性的影響。
본문급출료일류시체미분방정해위정해적충분조건,위료응용방편,환연구료재비교간단조건하유정해적정황,병설명료시체대방정해적비부성적영향。
This paper gives some sufficient conditions which guarantee the solution of delay differential equations to be positive,In order to apply conveniently,We also study the positive solution under some simple sufficient conditions,and explain the influence of the time delay to the nonnegativity of the solution.
