Cancel Package

Installation

Download the cancel package here: ftp://ftp.dante.de/tex-archive/help/Catalogue/entries/cancel.html

Mac OS X

You can install the cancel package on Mac by downloading cancel.zip, unzipping, and moving cancel.sty to ~/Library/texmf/tex/latex.

Usage

There are two handy functions available from the cancel package: cancel and cancelto.

Latex Source	Result
\dfrac{\partial\phi}{\partial t}+\dfrac{\partial\left(u_{i}\phi\right)}{\partial x_{i}}=\dfrac{\partial}{\partial x_{i}}\left(D_{\phi}\dfrac{\partial\phi}{\partial x_{i}}\right)
\cancel{\dfrac{\partial\phi}{\partial t}}+\dfrac{\partial\left(u_{i}\phi\right)}{\partial x_{i}}=\dfrac{\partial}{\partial x_{i}}\left(D_{\phi}\dfrac{\partial\phi}{\partial x_{i}}\right)
\dfrac{\partial\phi}{\partial t}+\dfrac{\partial\left(u_{i}\phi\right)}{\partial x_{i}}=\cancelto{0}{\dfrac{\partial}{\partial x_{i}}\left(D_{\phi}\dfrac{\partial\phi}{\partial x_{i}}\right)}
\dfrac{\partial\phi}{\partial t}+\dfrac{\partial\left(u_{i}\phi\right)}{\partial x_{i}}=\cancelto{0}{\dfrac{\partial}{\partial x_{i}}\left(\dfrac{1}{\cancelto{\infty}{Pr}}\,\,\,\,\,\,\,\,\dfrac{\partial\phi}{\partial x_{i}}\right)}