# Working with powers

• Jul 28th 2011, 06:24 AM
RodBrown
Working with powers
I am trying to figure out this progression from a book I am reading and not having a lot of luck.

A is proportional to B^2.8

A is proportional to B x C^2

Therefore A is proportional to C^3.1
• Jul 28th 2011, 06:58 AM
Siron
Re: Working with powers
You have to be more clear with your notation:
$A$ is proportional to $B^{2,8}$
$A$ is proportional to $B\cdot C^2$
Therefore $A$ is proportional to $C^{3,1}$
Is this the exercice?
• Jul 28th 2011, 07:42 AM
RodBrown
Re: Working with powers
My apologies, yes that is the exercise.
• Jul 28th 2011, 09:56 AM
PASCALfan
Re: Working with powers
I think this is gives the solution
• Jul 30th 2011, 02:24 AM
RodBrown
Re: Working with powers
Aha, Thank you PASCALfan, now I can see where I was going wrong, again thank you very much.