What is Log

$log_{a}x=n$

than

$a^{n}=x$

examples

example 1

ex1: $log_{4}4=n$ find n.

$a^{n}=x$

$4^{n}=4$

n=1

example 2

ex1: $log_{4}x=2$ find x.

$a^{n}=x$

$4^{2}=x$

x = 16