How do I use log with a base of my choice?

Question

0

561

1

How do I use log without a base of 10?

Guest Jul 31, 2016

geno3141 · Answer 1 · 2016-07-31T02:08:10

You can change any base into base 10 by using this formula: log_b(x) = log₁₀(x) / log₁₀(b).

For instance, you can find log₇(114) by using log₁₀(114) / log₁₀(7).

You need not change the log into base 10; it can be changed into any base.

If you want to use ln, log_b(x) = ln(x) / ln(b).

Example, you can find log₇(114) by uing ln(114) / ln(7).