Boundedness for Semilinear Duffing Equations at Resonance
نویسندگان
چکیده
In this paper, we prove the boundedness of all solutions for the equation x + n 2 x + φ(x) + g (x)q(t) = 0, where n ∈ N, q(t) = q(t + 2π), φ(x) and g(x) are bounded.
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