Nonlinear Dynamics and Chaos
Nonlinear Dynamics and Chaos
2nd Edition
ISBN: 9780813349107
Author: Steven H. Strogatz
Publisher: PERSEUS D
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Chapter 2.6, Problem 1E
Interpretation Introduction

Interpretation:

To explain the paradox that a simple harmonic oscillator oscillates along one dimension, but as per the textbook, it is not possible for a one-dimensional system to oscillate.

Concept Introduction:

Dynamics of the first-order system is dominated by fixed points. All the trajectories are either approach to a fixed point or diverge from the fixed points making them either stable or unstable fixed points.

It simply means that the phase points never reverse their direction.

However, if a fixed point is considered as an equilibrium solution, the approach to the equilibrium solution is always monotonic. Therefore, it is not possible to have overshoot or damped or undamped oscillations. Hence, for x˙=f(x), there is no periodic solution

Therefore, as per the book, it is not possible for a one-dimensional system to oscillate.

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