Definition: Unstationary refers to a state of being in motion, either due to a change in position or velocity, without any significant acceleration. This can be seen as an unstable or chaotic system where objects are constantly moving and changing their positions or velocities. Unstationary systems often exhibit a range of behaviors that are not well-defined, such as oscillations, resonance, and chaos. Understanding unstationary systems is important in various fields, including physics, engineering, economics, and biology, as they can
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