Question

What is the base of the `log` function?

Answer 1

It could be `10` or `e`. It depends on local conventions.

Explanation:

On Socratic we usually use `log` to mean `log_10` and `ln` to mean `log_e`, but `log` is quite often used elsewhere to mean `log_e`.

It seems to me that the problem is that in different subject areas it is more natural to use common base `10` logs or to use natural base `e` logs.