来自《耶鲁大学开放课程：金融理论 第7集 第7集》

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  So you can just solve this.
  你们能够解出来
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  So 1 plus i to the n
  (1+i)的n次方
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  means that if you take the logs of both sides
  如果两边同取对数
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  and you know that log of 2 is .69,
  你们知道log2等于0.69
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  then you take the log of both sides,
  两边同取对数
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  n log plus i has to be log of 2,
  n倍的log(1+i)等于log2
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  so n = .69 over log of 1 plus i.
  因此n等于0.69/log(1+i)
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  So now log of (1+i)is approximately i.
  log(1+i)约等于i
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  Why is that?
  为什么等于它呢
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  So this is Taylor's rule.
  这是泰勒定理
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  You don't actually have to know this
  如果以前没接触过泰勒定理
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  if you've never seen Taylor's rule before.
  就不用了解它了