Apparently, the symmetry of the vector function causes cancelation (note results for P = Sin and P=Cos, differ by a minus sign)

But, why doesn't n=1 give us the correct result above? Note that the denominator goes to zero as n→1

$\mathrm{Limit}\left[\mathrm{pdigen},n\to 1\right]$

Created by Mathematica (October 17, 2005) |