That's another conventional formula that goes from interest rate to price of the security.

这是另一条已知利率,求证券价格的经验公式

耶鲁公开课 - 金融市场课程节选

Your mortgage payment is constant through time but the fraction of it that goes to paying off principal versus interest changes through time and it just changes as dictated by this formula.

抵押贷款每月还款是固定的,但是其中本金和利息的比例关系,会随时间而改变,这是由这个公式所决定的

耶鲁公开课 - 金融市场课程节选

What we do is we take the interest rate, which I'll call r, and plug it into a formula, which I didn't actually do the arithmetic to their number.

我们只需将利率r,代入等式中,虽然我没有代入数字验证过...

耶鲁公开课 - 金融市场课程节选