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範例 11：古代的水鐘 |
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古代的水鐘，從一碗中漏水，碗底小孔的半徑為γ（常數），以水面的高度判斷時間，現在希望時間的流逝和水面高度的降低成正比，請問，碗的形狀為何？ |
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《 解答 》 |
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假設，碗是一個旋轉面，由之前的托里切利定律
但是 （ 是小於零的常數）
 ，
讓 ， ，∴ 對
y 軸旋轉得到的旋轉面。
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About
This document |
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This document
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Copyright © 1993, 1994, 1995, 1996, Nikos
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Copyright © 1997, 1998, 1999, Ross
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The command line arguments were:
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The translation was initiated
by Shu Cheng-chou on 2003-05-14 |
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