標題: [隨寫] Note: boxing equations
時間: Tue Mar 23 12:11:12 2010
With amsmath package, there is one simple command to box a
displayed equation: \boxed. Here is an example:
\begin{equation} % equation, align, ... all work
\boxed{f = ma}
\end{equation}
The above will give a boxed equation like
__________
| |
| f = ma | (1)
|__________|
However, whenever multiple lines are involved, this does not work.
The empheq package is helpful here. This package is compatible with
many commonly used packages such as amsmath and fancybox.
Simplest usage is like
\begin{empheq}[box=\fbox]{
f & = ma \\
p & = mv
\end{empheq}
These will give something like
_______
| |
| f = ma | (1)
| p = mv | (2)
|_______|
There are other types of boxes that can be called within the help
of fancybox package. They are doublebox, ovalbox, and shadowbox.
The last one may cause problem and needs some advanced modification.
For the other two, one can just, for example,
\begin{empheq}[box=\doublebox]
....
\end{empheq}
ovalbox actually sucks. So ignore it.
