# Waves: Analysis/Speed of Disturbance

1. Nov 4, 2009

### Desh627

1. The problem statement, all variables and given/known data
A disturbance can be written as: y(x,t)= (e-(x/b)2e2xt/be-t2)a

This disturbance is:
(A) not a traveling wave
(B) a traveling wave with speed v = a
(C) a traveling wave with speed v = a/b
(D) a traveling wave with speed v = b

2. Relevant equations
y(x,0) = f(tx)
y(x,t) = f'(x) = f(x-vt)
$$\partial$$2f = 1$$/$$v2 $$\partial$$2y$$/$$dt2
dz2

3. The attempt at a solution
We haven't really dealt with waves using e, and I'm not quite sure exactly how to attack this problem: plug it into the wave equation, trying to simplify to equate what's in the parenthesis to compare with x-vt, etc., so I'm a touch lost overall in trying to attack this problem.