Latex tips and tricks

=====Boxed equation=====

Define a new command as follows:

<code latex>

\newcommand{\boxedeqn}[1]{%

\[\fbox{%

\addtolength{\linewidth}{-2\fboxsep}%

\addtolength{\linewidth}{-2\fboxrule}%

\begin{minipage}{\linewidth}%

\begin{equation}#1\end{equation}%

\end{minipage}%

}\]%

}

</code>

Here is an example of its use:

<code latex>

\boxedeqn{

X_1(j\omega) =

\int\limits^{+\infty}_{-\infty} x_1(t) e^{-j\omega t} dt

}

</code>

If you dont want to box the equation number, use \boxed{…}