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Substituting the plane wave solution into the wave equation

  • Thread starter janemba
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39
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what do you have to do to solve this

attachment.php?attachmentid=13353&stc=1&d=1207276115.jpg
 

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Hootenanny
Staff Emeritus
Science Advisor
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6
Try substituting the plane wave solution into the wave equation.
 
39
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And what rule do you use to do that
 
Dick
Science Advisor
Homework Helper
26,258
618
You use, like, (d/dx)e^(f(x))=(d/dx)(f(x))*e^(f(x)). The ordinary rules of differentiation. Just tell us what you get. The exponentials should cancel on both sides leaving you with an algebraic relation between omega and k.
 
39
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is there like a video that teach you the rules of ordinary rules of differentiation ?
 
Dick
Science Advisor
Homework Helper
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618
I don't know that there is a video, but try any elementary calculus text. Pay particular attention to the 'chain rule'.
 

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