Current Location: Home> Function Categories> atanh

atanh

Antihyperbolic tangent
Name:atanh
Category:math
Programming Language:php
One-line Description:Inverse hyperbolic tangent.

Definition and usage

atanh() function returns an inverse hyperbolic tangent of an angle.

Example

Returns the inverse hyperbolic tangent value of different values:

 <?php
echo ( atanh ( M_PI_4 ) ) ;
echo ( atanh ( 0.50 ) ) ;
echo ( atanh ( - 0.50 ) ) ;
echo ( atanh ( 1 ) ) ;
echo ( atanh ( - 1 ) ) ;
?>

Try it yourself

grammar

 atanh ( x )
parameter describe
x Required. A number.

illustrate

atanh() function returns the inverse hyperbolic tangent value of x , that is, the value whose hyperbolic tangent is x .

Similar Functions
  • Generate a random integer rand

    rand

    Generatearandominteg
  • Absolute value abs

    abs

    Absolutevalue
  • Antihyperbolic cosine acosh

    acosh

    Antihyperboliccosine
  • Cosine cos

    cos

    Cosine
  • Inverse hyperbolic sine asinh

    asinh

    Inversehyperbolicsin
  • Returns exp(number) - 1, and can calculate the exact result even when the value of number is close to zero. expm1

    expm1

    Returnsexp(number)-1
  • Square root sqrt

    sqrt

    Squareroot
  • Reverse cosine acos

    acos

    Reversecosine
Popular Articles