# How do you use the Change of Base Formula and a calculator to evaluate the logarithm #log_pi 14.2#?

##### 1 Answer

#### Explanation:

To calculate

Then divide the result by the logarithm of the number you wish to use as your base:

Simplified into a single expression:

(Note how both logarithms above use the same base. The Change of Base formula will not yield the correct result, otherwise.)

Another common base is base

This would be input into a calculator as: