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The impact of unbounded swings of the forcing term on the asymptotic behavior of functional equations
Authors:Bhagat Singh
Institution:(1) Department of Mathematics, University of Wisconsin Centers, Manitowoc County, 705 Viebahn St., Manitowoc, WI, 54220, U.S.A.
Abstract:Necessary and sufficient conditions have been found to force all solutions of the equation

$$(r(t)y'{\text{(}}t{\text{))}}^{{\text{(}}n - 1{\text{)}}} + a(t)h(y(g(t))) = f(t),$$
to behave in peculiar ways. These results are then extended to the elliptic equation

$${\text{|}}x{\text{|}}^{p - 1} \Delta y{\text{(|}}x{\text{|) + }}a{\text{(|}}x{\text{|)}}h(y(g{\text{(|}}x{\text{|)))}} = f{\text{(|}}x{\text{|)}}$$
where Delta is the Laplace operator and p ge 3 is an integer.
Keywords:oscillatory  nonoscillatory  exterior domain  elliptic  functional equation
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