# How do you evaluate #log_3 81#?

##### 1 Answer

Feb 5, 2015

The answer is

The question that the

To what power do I have take

So in your case the question is:

To what power do I take

Usually, you will be working with '10-logs' or 'e-logs'.

Those you can find on your calculator:

If you use these buttons with shift or 2nd you get the opposite functions, the antilogs, marked as