Question

what is a natural base of a logrithm, e or 10?

Answer 1

\[\log = \log_{10}\]
ln base e

Answer 2

so a nartual lorgaithm is a base of e?
and a logarithm natrual base is 10

Answer 3

It is called a natural logarithm, because it has base of a constant that appears in many natural growth (and decay) problems
This constant is $$ \Huge e $$