cosh
(PHP 4 >= 4.1.0, PHP 5)
cosh -- Hyperbolic cosine
Beskrivelse
float
cosh ( float arg )
Returns the hyperbolic cosine of arg
,
defined as (exp(arg) + exp(-arg))/2.
Parameterliste
arg
The argument to process
Returneringsværdier
The hyperbolic cosine of arg