Well, there's a formula that's been used by bond traders for hundreds of years and it's a traditional expression, which goes from the discount rate to the price.

这里有个债券交易商,用了上百年的公式,这是个传统表达式,它能用折扣率算得价格

耶鲁公开课 - 金融市场课程节选

Any questions about going through these cycles and using expressions like this and so forth? Expressions like this you know turn up in various places, like in the equations sheet that appears at the end of exams, right?

关于推导这些循环和使用,这样的表达式之类的,有没有什么问题？,这样的表达式在各种地方都会出现,比如试卷后面的公式页？

麻省理工公开课 - 热力学与动力学课程节选