Abstract
In this paper, we prove the boundedness of all solutions for the equation $x'' + n^2x + \phi(x) + g''(x) q(t) = 0$, where $n \in \mathbb{N}$, $q(t) = q(t+2\pi)$, $\phi(x)$ and $g(x)$ are bounded.
Citation
Xiumei Xing. Yiqian Wang. "BOUNDEDNESS FOR SEMILINEAR DUFFING EQUATIONS AT RESONANCE." Taiwanese J. Math. 16 (5) 1923 - 1949, 2012. https://doi.org/10.11650/twjm/1500406805
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