Question

I want to know the practical applications of AM ,GM and HM. During derivation of an expression how we will know that either we have to use am or gm or hm .

Answer 1

http://mathforum.org/library/drmath/view/69480.html

Answer 2

Thank you @aum . This is very helpful. I understood this thing.

Answer 3

You are welcome. That was a good question to ask.