### Hypertext Help with LaTeX

# Displaymath

There are four environments that put LaTeX in math mode:
math,
displaymath, eqnarray,
and equation.
The math environment is for formulas that
appear right in the text. The displaymath and equation environments are
for formulas that appear on their own line; they differ only insofar
as the latter prints an equation number. LaTeX will **not**
break lines in displaymath or equation environments unless told to do
so with a `\\` command.
The displaymath environment can be entered by

`\begin{displaymath}
math equation \\
second line of math equation
\end{displaymath}`

Because displaymath may be used frequently to display relatively
short equations, there are convenient alternative forms:
`\[ displayed math equation \]`

or (the following does not seem to be well documented, but appears to work)
`$$ dispalyed math equation $$`

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Revised: Sheldon Green, 5 Jun 1995.