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9.1 In-Line Mathematics

In-line mathematics is created using the `math` environment. (Note U.S. spelling -- “math” not “maths”).

**Example:**

It's somewhat cumbersome having to type
`\begin`

`{math}` and `\end`

`{math}` and it also
makes the source code a little difficult to read so there
are shorthand notations that can be used instead:
`\(` is equivalent to `\begin`

`{math}` and
`\)` is equivalent to `\end`

`{math}`. So
the example above can be rewritten:

There is an even shorter notation:
The special character `$` is equivalent
to both `\begin`

`{math}` and `\end`

`{math}`:

This is considerably easier to type and
to read, but you need to make sure that all your `$`
symbols have matching pairs. The above code will look like:

The other advantage in using `$` over `\(` and
`\)` is that `$` is a robust command,
whereas `\(` and `\)` are
fragile commands and
will need to be protected if they occur in a moving
argument.

Note: you should always make sure you are in maths mode to
typeset any variables (such as
,
,
), as this will
ensure that the correct maths fonts are used, as well as the
appropriate spacing. Similarly, don't use `$`
as a short cut for an italic font.

This book is also available as A4 PDF or 12.8cm x 9.6cm PDF or paperback (ISBN 978-1-909440-00-5).