Approximation Techniques for Non Linear Oscillators
classification
🌊 nlin.CD
keywords
perturbationalwaysapproximationbalanceconstantcouplingexpandedhand
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We show that the Lindstedt-Poincare perturbation theory is always a reliable technique in the region of small coupling constant. The harmonic balance result, on the other hand, if expanded in the perturbation parameter may lead to incorrect results.
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