Primitive of Function under its Derivative/Mistake

Source Work

 * $\text {II}$. Calculus: Integration
 * $\text {II}$. Calculus: Integration

Mistake

 * $\ds \int \frac {\map {f'} x} {\map f x} \rd x = \map \ln {\map f x}$

The same mistake is propagated through the whole chapter.

Correction
It should be:


 * $\ds \int \frac {\map {f'} x} {\map f x} \rd x = \ln \size {\map f x} + C$

from Primitive of Function under its Derivative.