# How do you evaluate #log_(1/3) (1/9)#?

##### 2 Answers

Sep 6, 2016

Rewrite

#### Explanation:

Rewrite

Remember, the answer to a log is an exponent, so you are looking for the exponent that makes

Sep 6, 2016

#### Explanation:

In this log form of

The question being asked is

"what power or index of

This one can be done by inspection.

The answer is clearly 2!

Note that

Else you have to use the change of base law: