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<!DOCTYPE html> <html> <body> <?php echo is_nan(200) . "<br>"; echo is_nan(acos(1.01)); ?> </body> <!-- Mirrored from www.w3schools.com/php/phptryit.asp?filename=tryphp_func_math_is_nan by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 02:51:03 GMT --> </html>
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