Hi,

one simple question :) (to someone who knows), i am stuck,

how to getnfrom equation, if i know whatxandyare:

$\displaystyle x = y^n$

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- Aug 15th 2010, 04:25 AMpodliumfinding power of
Hi,

one simple question :) (to someone who knows), i am stuck,

how to get*n*from equation, if i know what*x*and*y*are:

$\displaystyle x = y^n$ - Aug 15th 2010, 04:36 AMProve It
You need to use logarithms...

$\displaystyle x = y^n$

$\displaystyle \ln{x} = \ln{(y^n)}$

$\displaystyle \ln{x} = n\ln{y}$

$\displaystyle n = \frac{\ln{x}}{\ln{y}}$. - Aug 15th 2010, 04:49 AMpodlium
TNX :) , i thought it has something to do with logarithms. I really appreciate it

- Aug 15th 2010, 05:10 AMProve It
Of course, it doesn't have to be the natural logarithm. It can be the logarithm of any base... I just always use natural logarithms because they're the most often used in practice...