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Homework Help: The speed of a Wave Pulse

  1. Jul 4, 2010 #1
    1. The problem statement, all variables and given/known data
    A wave pulse is described by the function y(x,t)=De^-(Bx-Ct)^2, where B, C and D are all positive constants. What is the speed of this wave?


    2. Relevant equations
    y=f(x+vt)


    3. The attempt at a solution
    y=De^-(Bx-Ct)^2 is of the form y=f(x+vt)
    however there is a B in front of x so I factor the B out and get
    -(Bx-Ct)^2 = -B^2(x-Ct/B)^2
    so the velocity is C/B
    Is this the right approach?
     
  2. jcsd
  3. Jul 4, 2010 #2
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