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440*r4=880

 Oct 15, 2015
 #1
avatar+12531 
0

Music frequency

 

laugh

 Oct 15, 2015
 #2
avatar+26404 
0

frequency

\(440\ \text{Hz} \cdot 2^{\frac{12}{12}} = 880\ \text{Hz}\)

laugh

 Oct 15, 2015

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