sqrt

    (PHP 4, PHP 5, PHP 7, PHP 8)

    sqrt — Radice quadrata

    Descrizione

    sqrt(float $arg): float

    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().

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