can anyone give me the most simple for someone with little diffrential equations back ground, on the proof for where the 1D wave equation was developed, i mean whats the proof for it. The 1D wave equation is a partial diffrential equation [tex]\frac{\partial^2\psi}{\partial x^2} = \frac{1}{c^2}\frac{\partial^2\psi}{\partial t^2}[/tex](adsbygoogle = window.adsbygoogle || []).push({});

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# The wave equation

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