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Old 05-10-2006, 11:00 AM
Sherri Sherri is offline
Join Date: Mar 2006
Posts: 25
Default About May 8

the question has not pointed out that we must use natural cubic spline!
hence i can use interpolation polynomials, and i work it out that
f(x) = x^3 - x (it fits the sample well )
so f'(0)=-1.
doesn't it make sense?
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