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On the asymptotic behaviour of solutions of x″ + a(t)f(x) = 0

Published online by Cambridge University Press:  24 October 2008

T. Burton
Affiliation:
Department of Mathematics, Southern Illinois University, Carbondale, Illinois 62901
R. Grimmer
Affiliation:
Department of Mathematics, Southern Illinois University, Carbondale, Illinois 62901

Extract

We consider the equation:

where a: [0, ∞) → R1, a(t) > 0, a'(t) is continuous,

f:( −∞, +∞) → R1, f is continuous, and xf(x) > 0 for x ≠ 0. The problem is to give conditions on a(t) and f(x) to ensure that all solutions of (1) tend to zero as t → ∞. First, however, we give some sufficient conditions and some necessary and sufficient conditions to ensure that all solutions of (1) are oscillatory or bounded.

Type
Research Article
Copyright
Copyright © Cambridge Philosophical Society 1971

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References

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