MATLAB Function Reference

acosh

Inverse hyperbolic cosine

Syntax

• Y = acosh(X)
  

Description

Y = acosh(X) returns the inverse hyperbolic cosine for each element of X.

The acosh function operates element-wise on arrays. The function's domains and ranges include complex values. All angles are in radians.

Examples

Graph the inverse hyperbolic cosine function over the domain .

• x = 1:pi/40:pi; 
  plot(x,acosh(x)), grid on
  
  
  

Definition

The hyperbolic inverse cosine can be defined as

Algorithm

acosh uses FDLIBM, which was developed at SunSoft, a Sun Microsystems, Inc. business, by Kwok C. Ng, and others. For information about FDLIBM, see http://www.netlib.org.

See Also

acos, cosh

acosd

acot

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