Question

When a logarithm has no base, do we assume that the base is 10, e, or nothing? Or something else?

I've talked to two people about this, and they gave me different answers. Can someone give me a definite answer? I'm kind of confused about it.

Answer 1

if its written as

ln then its base e

if its written as

log its assumed base 10

Answer 2

Huh, interesting. In my case, it was written as log. Thank you for answering!

Answer 3

so its base 10

Answer 4

I see. Thanks!