logarithmic cosine

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  • 对数余弦
    1. Let's now examine the simplest wave from where the profile is a sine or cosine curve.
      现在让我们来考察最简单的波形,它的剖面图是正弦或余弦曲线。
    2. The inverse function of that restricted cosine function is called the arccosine function.
      被限定的余弦函数之反函数叫做反余弦函数。