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粉红豹 · 2018年07月31日

问一道题:NO.PZ2015120604000016 [ CFA I ]

问题如下图:

    

选项:

A.

B.

C.

解释:




为什么不能用18000*(1+10%)^(365*2/365) =21780

隐含意思是10%是daily compounded interest rate,不对吗?



1 个答案

菲菲_品职助教 · 2018年07月31日

同学你好,我不太理解你写的(1+10%)^(365*2/365)是什么意思。

但是若没有特殊说明,题目给的收益率一般都是年化收益率,所以此题中10%是年化收益率。

其实按照解释上面的方法来看是很直观的,也很好理解的。

因为这道题干写的是coumpound daily,所以

N=2*365,代表一共2年*365天=730天;

I/Y=10/365,代表把10%的年收益率转换成(10/365)的日收益率;

PMT=0;

PV=-180,000;

CPT FV=$219,846.47.

粉红豹 · 2018年08月01日

1+10%)^(365*2/365)代表知道一年的利率,求两年的收益,这样理解不对吗

菲菲_品职助教 · 2018年08月01日

这样理解是不对的哦,因为是复利计息,不是单利计息呢。

粉红豹 · 2018年08月01日

哦哦

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