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<cosdecbin>
Last updated: Mon, 16 Jul 2012

cosh

(PHP 4 >= 4.1.0, PHP 5)

cosh -- 双曲余弦

说明

float cosh ( float arg )

返回 arg 的双曲余弦值,定义为 (exp(arg) + exp(-arg))/2

参见 cos()acosh()sin()tan()




<cosdecbin>
 Last updated: Mon, 16 Jul 2012
 
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