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[edit] Last updated: Fri, 17 May 2013

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sqrt

(PHP 4, PHP 5)

sqrtRadice quadrata

Descrizione

float sqrt ( float $arg )

Restituisce la radice quadrata di arg.

Example #1 Esempio di uso di sqrt()

<?php
// La precisione dipende dalle impostazioni delle direttive sulla precisione
echo sqrt(9); // 3
echo sqrt(10); // 3.16227766 ...
?>

Vedere anche pow().



add a note add a note User Contributed Notes sqrt - [1 notes]
up
5
jouhni at web dot de
8 years ago
To get any root of a number your can use the pow() function:

pow(8, 1/3)

which gives you the third root of eight.

Jouhni

 
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