تابع ‎expm1()‎‎ در PHP

<?php
echo(expm1(0) . "<br>");
echo(expm1(1) . "<br>");
echo(expm1(10) . "<br>");
echo(expm1(4.8));
?>
<?php
echo(expm1(0) . "<br>");
echo(expm1(1) . "<br>");
echo(expm1(10) . "<br>");
echo(expm1(4.8));
?>اجرای کد