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{\bf  NURBS}  \hfill today
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{\bf G. Farin }
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\begin {center} {\bf Programming  assignment \#4 }\\
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{\em due 4-30}\\
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Compare curvature plots of degree 2,3,4 B-spline curves. Pick your
control points on parts of a spiral as one example.
Since you will need first and second derivatives, you might want
to implement a sufficiently general blossom routine.
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