20:00 (1.5X) 前面3.6题中不是说real rate=nominal rate-inflation rate吗?为什么和这题讲的又不一样呢
李坏_品职助教 · 2024年05月08日
嗨,从没放弃的小努力你好:
real rate=nominal rate-inflation rate这是简便算法。
精确算法是:(1+nominal rate) = (1+real rate)*(1+inflation rate),而real rate = (1+nominal rate) / (1+inflation rate) - 1
(1+nominal rate) = (1+real rate)*(1+inflation rate) = 1 + inflation rate + real rate + real rate*inflation rate,由于rate都是很小的数字,所以两个rate相乘之后更小了,在数字很小的情况可以忽略不计,所以(1+nominal rate) ≈1 + inflation rate + real rate ,所以简便算法就是:real rate=nominal rate-inflation rate
----------------------------------------------就算太阳没有迎着我们而来,我们正在朝着它而去,加油!