1. The problem statement, all variables and given/known data Derive the expression v = lnfn where ln is the shortest distance between nodes for the nth harmonic. 2. Relevant equations v = wave speed ln = shortest distance between nodes for the nthharmonic fn = frequency of the nth harmonic 3. The attempt at a solution Is it asking me to take the derivative of the wave speed, which I believe would give me the acceleration of the wave? So, wave acceleration = 2*ln Am I making any sense?