1. Determine if the implied interest rate can be uniquely determined if you know volatility; consider the derivative dC/dr
3. Assume that the volatility is 10%/year
2.  From the dataset op3.dat compute the implied interest rate for the Call  option with the strike price E=1415 expiring on 3 different days; make 1  plot - interest rate vs days to expiry.
 
Option prices dataset 3
This dataset containsoption prices (for different expiry dates) for the S&P 500 Index on 1/3/2007.
All options have the same strike price E=1415, but different expiry dates.
We consider options with three expiry dates = 1/20, 2/17, 3/17
 
Format of the file = [Days to Expiry]   [Bid Price]   [Ask Price]
11     13    14.6
31     24.4  26.4
50     34.1  36.1