### Hypertext Help with LaTeX

## \sqrt

`\sqrt[root]{arg}`

The `\sqrt` command produces the square root
(radical) symbol with the argument as radicand. The optional
argument, root, determines what root to produce, i.e. the
cube root of x+y would be typed as `$\sqrt[3]{x+y}$`.

The radical sign is variable size,
that is, it is made larger if the radicand is, for example, a
built-up fraction.

See also: Math Formulas,
Math Miscellany.

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Revised 31 May 1995.