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Old 04-29-2013, 08:21 AM
IsidroHidalgo IsidroHidalgo is offline
Join Date: Apr 2013
Location: Toledo (Spain)
Posts: 28
Default Re: *ANSWER* Stuck on #4

Juan, after the derivative of the mean squarred error have you arrived to a=(x_1y_1+x_2y_2)/(x_1^2+x_2^2)?
If so, answer is IMO (I haven't send my answers) clearly upon 0.79
Good luck!
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