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Kate2010
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Homework Statement
A stretched string occupies the semi-infinite interval -[tex]\infty[/tex]<x[tex]\leq[/tex]0.
y(x,t) := f(x-ct) + f(-x-ct) is a solution of the wave equation.
What boundary condition does y satisfy at x=0?
Describe what is going on in terms of incident and reflected waves.
Homework Equations
The Attempt at a Solution
Is the boundary condition just y(0,t) = 2f(-ct)?
At x=0, the displacement varies as a function of time so the end is not fixed. However, I'm unsure about how this relates to incident and reflected waves.
(I worked out that if y(x,t) = f(x-ct) - f(-x-ct) then f(x-ct) represented the incident wave and -f(-x-ct) represented the reflected wave.)