- 6

- 0

so in other words fbeat = f1 - f2 where.... fbeat 2= fbeat 9.... where 2f1 - 2f2 = 9f1 - 9f2 ... and i know the length of the closed end pipe which is 1.10 how am i suppose to consider even solving this or where I can get the frequency of a closed end pipe at n=2....