## Beat frequency

1. The problem statement, all variables and given/known data
If there are three frequencies: 200hz, 206hz and 209hz, how do you calculate the beat frequency of three frequencies?

2. Relevant equations
Fb=abs(F1-F2)

3. The attempt at a solution
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution
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 Admin See if this helps - http://hyperphysics.phy-astr.gsu.edu...ound/beat.html http://hyperphysics.phy-astr.gsu.edu...sumdif.html#c1 What are the possible combinations?
 thanx for the links but still not sure how to solve it... Can you clarify what you meant by 'possible combination?' thanx alot
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