Answer:
base = e
Step-by-step explanation:
The general log function is defined as
[tex]f(x)=\log_a x[/tex] .... (1)
where, a is the base of the log function.
The natural logarithm function is
[tex]f(x)=\ln x[/tex]
It can be rewritten as
[tex]f(x)=\log_e x[/tex] .... (2)
where, e is a constant or Euler's number is:
e ≈ 2.71828183
On comparing (1) and (2) we get
[tex]a=e[/tex]
Therefore, the base of the natural logarithm function is e.