Help with formula

[osx99]

This is probably really easy but I can't remember how to rearrange the following formula

How do i find c in

y = x^c (y equals x raised to the power c)

c = ?

 

[osx99]

I remember now

c = log(y,x)

 

[mintjulep]

How do i find c in

y = x^c <---- It's right there at the end

 

[electricpete]

you could also use

y = x^c
ln = c*ln(x)
c = ln/ln(x)
which gives the same result