How to use the Change of Base Formula and a calculator to evaluate the logarithm log 4^20?

Tianna Mayer

Tianna Mayer

Answered question

2022-12-25

How to use the Change of Base Formula and a calculator to evaluate the logarithm log420?

Answer & Explanation

halliekorinnbsn

halliekorinnbsn

Beginner2022-12-26Added 13 answers

The likelihood that the desired answer is to find is high log420 rather than the apparent question of find log420
In any case the change of base formula says (in its general form) that
For a, b, x positive,
logbx=logaxlogab
Because calculators tend to have built-in functions for base 10 logs, log10 (often written log) and/or natural logs ln, it is not unusual to see the change of base formula given as:
For b, x positive,
logbx=logxlogb or logbx=lnxlnb

Do you have a similar question?

Recalculate according to your conditions!

Ask your question.
Get an expert answer.

Let our experts help you. Answer in as fast as 15 minutes.

Didn't find what you were looking for?