coscosh
(PHP 4 >= 4.1.0, PHP 5)
cosh — Hyperbolic cosine
Descrierea
float cosh
( float $arg
)
Returns the hyperbolic cosine of arg , defined as (exp(arg) + exp(-arg))/2.
Parametri
- arg
-
The argument to process
Valorile întroarse
The hyperbolic cosine of arg
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