Question

When is base of change applied?

Answer 1

in log

Answer 2

usually applied when you have a log in a base that is not a standard base on a calculator
for example, base 10 and base e

\[\log_{3} x = \frac{\ln x}{\ln 3} \]
notice the old base is always in denominator when changing base

Answer 3

Thank!

Answer 4

yw :)