Calculating Semitones in an octave

[harish3679]

Hi guys,

To find frequency using semitones value from A=440Hz

We have, f = 2^(n/12)*440 //where n is the semitone value

Now, to find semitone value for A=432Hz from 440Hz

It is 432 = 2^(n/12)*440

I came up with 2^n=0.92668

Although have no clue how to calculate this in octave rather got an error
saying

"2^(n)=0.92668
parse error:

  invalid left hand side of assignment"

Someone, please shed light on this part


Regards,
Harish



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