# How do you evaluate #log_15 1#?

##### 2 Answers

Aug 31, 2016

Zero

#### Explanation:

This is I think quite easy to remember

So given

Rewrite as

Any number to the power of zero =1

So X=1

Aug 31, 2016

#### Explanation:

The question we need to ask with log format is..

"What index/power of 15 will give 1?"

Any base raised to the power of 0 will give 1.

Log form and index form are interchangeable.

Remember that