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Tangents on a 3d-cubic-spline


Hi!
I'm looking for a way to find tangents to points on a
SplineFunction.
I have a dataset of 3-dimensional coordinates and use SplineFit to
generate
a SplineFunction that can be plotted with ParametricPlot3D.

How do a calculate tangent vectors for my SplineFunction at given
points?

Thanx in advance

Philipp

gunz at treangeli.at



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