注意你的台阶尺寸随著值增加（大约值双每次）。
Notice how the step size increases as the value increases (values roughly double each time).
返回数值的双曲正弦值。！任意实数！
Returns the hyperbolic sine of a number! Is any real number!
计算数值的双曲余弦值。！任意实数。！
Returns the hyperbolic cosine of a number! Is any real number !
计算数值的双曲余弦值。！任意实数。！
Returns the hyperbolic cosine of a number! Is any real number !
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