Agree with your answer

來源: AnaZhang 於 2010-05-26 18:36:36 [檔案] [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次 (148 bytes)

回答: 要用微積分的吧。由 Commentate 於 2010-05-26 13:14:25

The path that the point on the circle takes is called a cycloid. The equations that you used are the formula for the length of one arc of a cycloid.

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• Thanks, I did not know that word before -guest007- ♀ (54 bytes) () 06/02/2010 postreply 09:14:07

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