## Hypertext Help with LaTeX

### Math Symbols

TeX provides almost any mathematical symbol you're likely to need.

Some, like + - = < > | are obtained from the keyboard (the first three can be used in any mode; the last three only in math mode).

Others are generated by LaTeX commands and can generally be used only in math mode. The following describe some of the useful symbols

• \frac generates fractions (math mode)
• \sqrt generates n-th root symbol (math mode)
• \stackrel places one item above another (math mode)