Manuals/calci/ACOSH

ACOSH(z)

Description

This function gives the Inverse Hyperbolic Cosine of a number.
Here 'z' is any positive real number i.e, Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle z \ge 1} .
Inverse Hyperbolic sine of a number is defined by Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle Acosh(z)=\log_e(z+\sqrt{z^2-1})}
Also ACOSH(COSH(z))=z
ACOSH(-2)=NAN , since z<1