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Old Feb 6th 2014, 01:54 PM   #1
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Vibrating String in 2D Wave Equation Derivation

I am looking for the derivation of the wave equation for a vibrating string in 2D. Most derivations I've seen assume that each particle in the string only changes in the y direction. I am looking for a derivation where movements in the x direction are also possible.
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Old Feb 7th 2014, 12:13 PM   #2
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I'll have to think about it, but are you asking about something like a coil spring that vibrates both vertically and horizontally?
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