答案后两行是乱码，请老师更正。

NO.PZ2020021205000030

问题如下：

The futures price of an asset is USD 20, and the volatility of the futures price is 30%. Calculate the value of a put option to sell futures in three months for USD 22. The risk-free rate is 4%.

选项：

解释：

In this case F0 = 20, K = 22, r = 0.04, u = 0.3,

T = 0.25, and Equation (15.13) gives

d,= $\frac{\ln(20/22)\;+\;(0.3^2/2)\;X\;0.25}{0.3\sqrt{0.25}}$ = -0.5604

d2 = $\frac{\ln(20/22)\;-\;(0.3^2/2)\;X\;0.25}{0.3\sqrt{0.25}}$ = -0.7104

p=22 $< / s p a n > e^{- 0.04 * 0.25}$ $< / s p a n > e^{- 0.04 * 0.25}$ N(O.71O4)

- 20 $< s p a n > e^{- 0.04 * 0.25}$ N(O.56O4) = 2.48

答案后两行是乱码，请老师更正。

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DD仔_品职助教 · 2022年03月25日

嗨，爱思考的PZer你好：

同学你好，

谢谢，已经收到反馈，具体答案直接把数字带入下面的公式即可：

put =22*EXP(-4%*0.25)*N(0.7104)-20*EXP(-4%*0.25)*N(0.5604)

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努力的时光都是限量版，加油！

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NO.PZ2020021205000030 问题如下 The futures priof asset is US20, anthe volatility of the futures priis 30%. Calculate the value of a put option to sell futures in three months for US22. The risk-free rate is 4%.p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Helveticcolor: #463f46}span.s1 {color: #4b5768}span.s2 {color: #6b5147} In this case F0 = 20, K = 22, r = 0.04, u = 0.3,p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 8.0px Helveticcolor: #4134}span.s1 {font: 8.5px Helvetica}span.s2 {font: 5.5px Helvetica}span.s3 {color: #696b}span.s4 {font: 9.5px Helvetica}span.s5 {color: #675248}T = 0.25, anEquation (15.13) gives=ln⁡(20/22) + (0.32/2) X 0.250.30.25\frac{\ln(20/22)\;+\;(0.3^2/2)\;X\;0.25}{0.3\sqrt{0.25}}0.30.25ln(20/22)+(0.32/2)X0.25= -0.5604p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 8.0px Helveticcolor: #4a4449}span.s1 {color: #6b6b6b}p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 5.5px Helveticcolor: #4c474span.s1 {font: 8.5px Helvetica}span.s2 {font: 8.0px Helvetica}span.s3 {font: 8.0px Helveticcolor: #a29f9e} =ln⁡(20/22) − (0.32/2) X 0.250.30.25\frac{\ln(20/22)\;-\;(0.3^2/2)\;X\;0.25}{0.3\sqrt{0.25}}0.30.25ln(20/22)−(0.32/2)X0.25= -0.7104p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 8.0px Helveticcolor: #4c474p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 8.0px Helveticcolor: #4a444b}put =22*EXP(-4%*0.25)*N(0.7104)-20*EXP(-4%*0.25)*N(0.5604)=2.48p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 8.0px Helveticcolor: #4a444b}p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 8.0px Helveticcolor: #4e464c}span.s1 {color: #373a}span.s2 {color: #777377}span.s3 {color: #636b73}span.s4 {font: 5.0px Helvetic 老师，如题，是我哪里理解错了吗

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2023-10-25 07:19 2 · 回答

这题怎么都算不对，老师能帮忙写一下过程吗

2020-03-10 16:21 1 · 回答

答案后两行是乱码，请老师更正。

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