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What does sqrt function mean?

爱喝马黛茶的安东尼
Release： 2019-08-17 11:01:51
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What does sqrt function mean?

What does the sqrt function mean?

Function: Find the square root of the parameters.

Related recommendations: "FAQ"

Syntax: 

sqrt(X)
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Parameters: X represents the number for finding the square root.

Description: Return the result of the square root of parameter X.

php sqrt() function usage example: 

<?php
$i = 9;
$i = sqrt($i);
$j = 8;
$j = sqrt($j);
$k = -5;
$k = sqrt($k);
echo $i."*****".$j."*****".$k;
?>
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Output: 

3*****2.8284271247462*****NAN
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