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Wave Equation

  1. Mar 29, 2010 #1
    Why the wave equation is
    [tex]\frac{\partial^2 u}{\partial^2 x}=c^2\nabla^2 u[/tex]?
    Where does it come from?Thanks.
  2. jcsd
  3. Mar 29, 2010 #2


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    For me to consider your relationship the wave equation I would have to change it to:

    [tex]\frac{\partial^2 u}{\partial^2 t}=c^2\nabla^2 u[/tex]

    The wave equation is probabley derived in every intro to PDE text book.

    Last edited by a moderator: Apr 24, 2017
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