structural:summarization
Change of base

The logarithm log (x) can be computed from the logarithms of x and b with respect to an arbitrary base k using the following formula:

Typical scientific calculators calculate the logarithms to bases 10 and e. Logarithms with respect to any base b can be determined using either of these two logarithms by the previous formula:

Given a number x and its logarithm log (x) to an unknown base b, the base is given by: