# How do you calculate #log_4 28#?

##### 2 Answers

#### Answer:

#### Explanation:

Using the identity

Now using tables as

#### Answer:

#### Explanation:

Log form and index form are interchangeable, and sometimes one form is easier to use than the other.

Note that:

"The base stays the base and the other two change around"

We can see that this is not an integer answer because:

The same result would have been obtained using

the change of base law.