# Primitive of Reciprocal/Mistake

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## Source Work

Appendix $2$: Table of derivatives and integrals of common functions

## Mistake

 $\ds \map f x: \,$ $\ds$  $\ds x^{-1}$ $\ds \int \map f x \rd x: \,$ $\ds$  $\ds \ln x$

## Correction

It should be:

$\ds \int \map f x \rd x = \ln \size x$