# How do you calculate #log_7 5.8# with a calculator?

##### 1 Answer

Aug 9, 2016

#### Answer:

#### Explanation:

Some calculators are able to calculate logs with any base, but let's work through this for those calculators which can only work with base 10.

Let

The variable is in the index, find the log of both sides.

Now use a calculator to find the answer

We could have written the following in one step: