For example 2 3 8. Logarithms are just indices written down on the line. Now some algebra to solve for k.
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Loudness in dB 10 log 10 p 10 12 where p is the sound pressure. Logarithms to Base 10. Graph of Exponentials 1 - Cool Math has free online cool math lessons cool math games and fun math activities. This video has fun with logs.