Wave Equation

  • Thread starter coki2000
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Main Question or Discussion Point

Hi,
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.
 

Answers and Replies

  • #2
Integral
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Hi,
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.
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.

https://www.amazon.com/dp/0486688895/?tag=pfamazon01-20
 
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