来自《耶鲁大学开放课程：基础物理 第6集 第6集》

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  that is x^6.
  就得到 x^6
• 
  
  This x^3 is really y^3 written in terms of x.
  这里的 x^3 实际是用 x 表示的 y^3
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  Then, I have to write Fy, which is x times y^2,
  然后我写出 Fy Fy 等于 x 乘以 y^2
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  which is x^4 times dy / dx which is 2·x.
  就是 x^4 乘以 dy / dx 就是 2·x
• 
  
  So, I get here, from all of this,
  从以上推导可以得出
• 
  
  Did I make a mistake somewhere? Pardon me?
  我是不是在什么地方出错了 什么
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  Did I, here? Here?
  是吗 在这里 还是在这里
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  Oh here?
  那是在这里了
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  Oh, x^6, right, thank you.
  哦 x^6 对了 谢谢你
• 
  
  How is that?
  现在怎么样
• 
  
  Thanks for watching that; you have to watch it.
  谢谢你看到这一点 你们要时时注意着
• 
  
  So, now what do I get?
  现在结果是