Abstract:
In this note, we show the existence of a global positive solution for a class of first-order delay differential equations:
x′(t)+a1(t)x(t)+a2(t)x(t−h(t))=0.x′(t)+a1(t)x(t)+a2(t)x(t−h(t))=0.
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In this study, we allow a1a1 and a2a2 to be of oscillating nature.