What is the derivative of ln(ln(ln(1/lnx)))?
Apply the fallowing formulas
$\displaystyle \dfrac{d}{dx}\;$ ln x = $\displaystyle \dfrac{1}{x}\;$
$\displaystyle \dfrac{d}{dx}\;g(f(x)) = g^1(f(x)) f^1(x)$
$\displaystyle \dfrac{d}{dx}\;$ ln(ln(ln(1/lnx))) = $\displaystyle \dfrac{1}{ln(ln(1/lnx))} \dfrac{d}{dx} [ln(ln(1/lnx))]\;$
now continue...