<?Php
echo expm1(5); // Output 147.41315910258
echo "<br>";
echo expm1(1); // Output 1.718281828459
echo "<br>";
echo expm1(0); // Output is 0
echo "<br>";
echo expm1(-1); // Output is -0.63212055882856
echo "<br>";
?>
Syntax
float expm1(float X);
X is the input float number . We get output as exp(X) - 1
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