OT Maths

[happypig]

It's been a long time since I did maths so can anyone help:

A=B^N

if A and B are known, how do I solve for N ?

 

[Blake]

N=log base B of A

edit: if you dont have a calculator where you can input you own logs
A = B^N take log base 10 of each side
logA = logB^N
logA = NlogB
N = logA/logB

 

[Kazenga <3]

have you tried turning it off and on again?

 

[Barrel of Fun]

If a= b^n

n root of b = a

And the base-b log of a = n

 

[happypig]

Thanks chaps, Kaz's suggestion worked a treat

 

[Everest]

Did you look for the answers at the back of the book?

 

[CP 0 3 BHA]

I'm still worrying about where I can input my own logs

 

[Fef]

Did you hear about the mildly constipated mathematician who worked it out with a pencil and paper?
Or the more heavily constipated mathematician who worked it out with logs and axes?

Anyone seen my coat?