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李羊羊羊羊 · 2023年10月10日

老师这个e的^2.5计算器怎么压

  1. CFA I
  2. Quantitative

NO.PZ2023052407000011

问题如下：

The current exchange rate between the euro and US dollar is USD/EUR1.025. Risk-free interest rates for one year are 0.75 percent for the euro and 3.25 percent for the US dollar. The one-year USD/EUR forward rate that best prevents arbitrage opportunities is:

选项：

A.

USD/EUR1.051

B.

USD/EUR1.025

C.

USD/EUR0.975

解释：

A is correct. To avoid arbitrage opportunities in exchanging euros and US dollars, investors must be able to lock in a one-year forward exchange rate of USD/EUR1.051 today. The solution methodology is shown below.

In one year, a single unit of euro invested risk-free is worth EUR1.0075 (=e0.0075).

In one year, a single unit of euro converted to US dollars and then invested risk-free is worth USD1.0589 (=1.025*e0.0325).

To convert USD1.0589 into EUR1.0075 requires a forward exchange rate of USD/EUR1.051 (=1.0589/1.0075).

老师这个e的^2.5计算器怎么压

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星星_品职助教 · 2023年10月10日

同学你好，

以e的0.0075次方为例，先输入0.0075，然后在计算器最左列找到LN键。按2nd+LN，直接可以得到结果1.0075.

e的其他次方同理可得。

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