# How do you find the derivative of f(x) = (ln x)^2?

I found: $f ' \left(x\right) = \frac{2 \ln \left(x\right)}{x}$
You can use the Chain Rule deriving the ${\left(\right)}^{2}$ first and then the $\ln$:
$f ' \left(x\right) = 2 {\left(\ln \left(x\right)\right)}^{1} \cdot \frac{1}{x} = \frac{2 \ln \left(x\right)}{x}$