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胡馨梦 · 2021年03月01日

计算器按照数字 算出来55.79年 数字右上角有个✳️号 是不是计算器设置上有问题 不知道如何解决 视频里的例题算出来也都不对的

  1. CFA I
  2. Quantitative

NO.PZ2018062016000006

问题如下：

Lucy believes that after retirement she will need about $2 million totally for her daily expenses. At present, she has $1million investment at a stated annual interest rate of 2.5%. Assuming compounded daily, how long does it take for Lucy to have enough money for retirement life?

选项：

A.

27.73 years

B.

28.07 years

C.

26.48 years

解释：

A is correct.

EAR=(1+0.025/365)365-1=0.02531

$1million*(1+0.02531)N =$2million, N=27.73 years.

计算器设置问题 右上角有星号
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1 个答案

星星_品职助教 · 2021年03月02日

同学你好，

计算结果的右上角是应该有*号的，这个没问题。

可以试一下以下两种方法：

①这道题的计算中，PMT应该输入0，否则会默认为还是上一次计算的数据，导致最后结果不准。所以可以：1）输入PMT=0进行覆盖；2）直接计算前先按2nd+FV，调用CLR TVM功能进行清零。

②计算器某个其他的地方设置有误，此时可以“reset”回复出厂设置，然后按照步骤①进行计算看看结果是否准确。

如果以上两个方法都不行，很可能就是计算器本身有问题了。

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