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tanh

(PHP 4 >= 4.1.0, PHP 5)

tanh — Hyperbolic tangent

說明

float tanh ( float $arg )

Returns the hyperbolic tangent of arg, defined as sinh(arg)/cosh(arg).

參數

arg: The argument to process

回傳值

The hyperbolic tangent of arg

參見

tan() - Tangent
atanh() - Inverse hyperbolic tangent
sinh() - Hyperbolic sine
cosh() - Hyperbolic cosine

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