# Article

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Keywords:
oscillatory; nonoscillatory; exterior domain; elliptic; functional equation
Summary:
Necessary and sufficient conditions have been found to force all solutions of the equation $(r(t)y^{\prime }(t))^{(n-1)} + a(t)h(y(g(t))) = f(t),$ to behave in peculiar ways. These results are then extended to the elliptic equation $|x|^{p-1} \Delta y(|x|) + a(|x|)h(y(g(|x|))) = f(|x|)$ where $\Delta$ is the Laplace operator and $p \ge 3$ is an integer.
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