Mathematics

Problem

When differentiating

\ln y

with respect to

x

, where

y

is a differentiable function of

x

, which of the following expressions is obtained? a)

\dfrac{1}{y}

(\ln y)\dfrac{dy}{dx}

\dfrac{1}{y}\dfrac{dy}{dx}

\dfrac{1}{\ln y}\dfrac{dy}{dx}