来自《耶鲁大学开放课程：博弈论 第6集 第6集》

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  Yeah, or it's... I guess it's twice the slope but that's fair enough.
  我觉得是斜率的2倍 回答得很好
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  I know what you mean.
  我明白你的意思了
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  So the marginal revenue here, let's put it in a different color,
  我用另一种颜色表示边际收入
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  the marginal revenue looks something like this and as
  边际收入的图像是这样的
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  I don't know what your name is, as the guy said,
  我不知道那位同学的名字 他说
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  the monopoly quantity is when marginal revenue equals marginal costs.
  垄断产量是边际收入等于边际成本的产量
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  As we know, this line here has twice
  我们都知道了 这条线的斜率
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  the slope of the original line of the demand curve,
  是需求曲线斜率的2倍
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  so the slope of this thing is -2b.
  也就是说它的斜率是-2b
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  Now, I'm going to claim that
  好了 我得说明一下
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  this monopoly quantity I claimed before is going to
  我之前说的垄断产量
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  our intuition says if the other firm isn't producing,
  直觉告诉我们如果另一家公司不生产