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Cubic

Cubic
is a setting specifying the type of spline generated by Spline and SplineFit.
  • A cubic spline is made of piecewise third-order polynomials, with C^1 continuity, and interpolates each of the points it is created from.
  • The second derivative of the spline at the endpoints is set to 0.
Needs["Splines`"]
Cubic splines go through all of the points:
In[2]:=
Click for copyable input
Out[2]=