If y=ln(f(x)), dy/dx=(f'(x))/f(x)

Prove that if:

y=\ln { \left( f\left( x \right)  \right)  } ,\quad \frac { dy }{ dx } =\frac { f

Firstly, say that:

y=h\left( x \right) \\ \\ g=f\left( x \right)

So:

differentiation

Other posts you may be interested in...