x
<html><body>echo(sqrt(0) . "<br>");echo(sqrt(1) . "<br>");echo(sqrt(9) . "<br>");echo(sqrt(0.64) . "<br>");echo(sqrt(-9));</body><!-- Mirrored from www.mdssup.ma/php/phptryit.asp?filename=tryphp_func_math_sqrt by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 05 Sep 2022 15:02:05 GMT --></html>
0
1
3
0.8
NAN
1
3
0.8
NAN