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Mathematics

Spline Interpolation and Its Role in Numerical Analysis

Quick fact

Spline interpolation avoids the wild oscillations that plague high-degree polynomial interpolation by using low-degree pieces (often cubics) joined smoothly, and its error can be made arbitrarily small by refining the knot spacing.

Why this is interesting

Ever tried to draw a smooth curve through scattered points, only to get a wiggly mess? Spline interpolation is the mathematical trick that keeps curves smooth without the chaos.