I am trying to strikeout an entire flalign
block. This post shows how to strikeout an aligned block using the cancel
package, but I'm not able to get it to work for the flalign environment. Any ideas how to get this to work without using tikz
?
\documentclass{article}
\usepackage{amsmath}
\usepackage[makeroom]{cancel}
\begin{document}
\begin{equation*}
\cancel{
\begin{aligned}
f(x) &= \sin(x) \\
g(x) &= \cos(x)
\end{aligned}
}
\end{equation*}
I want to strikeout this:
\begin{flalign*}
f(x) &= \sin(x) && \\
g(x) &= \cos(x) &&
\end{flalign*}
\end{document}