sqrt

sqrt EXPR

sqrt

Return the square root of EXPR. If EXPR is omitted, returns square root of $_. Only works on non-negative operands, unless you've loaded the standard Math::Complex module.

use Math::Complex; print sqrt(-2); # prints 1.4142135623731i

Domain registration - Domain registration service and cheap domain transfer

Cheap domain name: Register domain name -
Register domain name services from just
$8.95/year only

Register domain name search -
Register domain or buy domain name registration and cheap domain transfer at low, affordable price.

[ As far as we know, our computer has never had an undetected error. ]

Disclaimer: This documentation is provided only for the benefits of our web hosting customers.
For authoritative source of the documentation, please refer to http://www.perldoc.com