Logarithm

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A logarithm is the number to which a base must be raised to reach another number. e.g. log10(100)=2, so 102 =100. When seen as just log(n) this is because the base is 10. A natural logarithm is a logarithm with a base of the natural constant, which is known as e.

logb(xy) = logb(x) + logb(y)

logb(x/y) =logb(x) - logb(y)

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