<html><body>echo(tanh(M_PI_4) . "<br>");echo(tanh(0.50) . "<br>");echo(tanh(-0.50) . "<br>");echo(tanh(5) . "<br>");echo(tanh(10) . "<br>");echo(tanh(-5) . "<br>");echo(tanh(-10));</body><!-- Mirrored from www.w3schools.com/php/phptryit.asp?filename=tryphp_func_math_tanh by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 02:51:03 GMT --></html>