# How do you calculate # log_5(13)#?

##### 1 Answer

May 1, 2016

#### Answer:

#### 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..