Question

How do you calculate `log_5(13)`?

Answer 1

`log 13/log 5 = 1.5937`, nearly.

Explanation:

For long-term-memory:

log_b a = log a / log b oe, for that matter, log_c a / log_c b.

Check: log_5 13 = ln 13 / ln 5 = log 13/log 5 = 1.5937..