Math function asinh() to return inverse hyperbolic sine of a input in PHP

<?Php
echo asinh(5); // Output 2.3124383412728
echo "<br>";
echo asinh(1.5); // Output 1.1947632172871
echo "<br>";
echo asinh(0); // Output 0
echo "<br>";
echo asinh(2); // Output 1.4436354751788
echo "<br>";
echo asinh(-2); // Output -1.4436354751788
echo "<br>";
echo asinh(-3); // Output -1.8184464592321
echo "<br>";
echo asinh(-10); // Output -2.998222950298
echo "<br>";
echo asinh(-20.4); // Output -3.7092822713042
?>

Syntax

asinh(float X);

X is the input value

Questions

What does the `asinh()` function in PHP do?
What is the purpose of the `asinh()` function in PHP?
How is the `asinh()` function used to calculate the inverse hyperbolic sine of a number?
What is the range of values returned by the `asinh()` function in PHP?
Can the `asinh()` function be used with both positive and negative numbers?
What happens if you pass an invalid argument to the `asinh()` function?
How can you use the `asinh()` function to calculate the hyperbolic sine given the value of the inverse hyperbolic sine?
Are there any alternative ways to calculate the inverse hyperbolic sine in PHP besides using the `asinh()` function?
Can the `asinh()` function return a complex number?
What type of value does the `asinh()` function return: integer, float, or something else?

MIN() function
Math Functions

Subhendu Mohapatra

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asinh():inverse hyperbolic sine

DEMO of asinh()

Questions

Subhendu Mohapatra