Polynomial interpolation from points Polynomial interpolation from points

Polynomial interpolation from points

Enter 2–12 nodes, evaluate the interpolating polynomial, inspect normalized Newton coefficients and export the report.

Numerical Newton divided differences with normalized x coordinates. This is interpolation, not regression, smoothing or symbolic exact arithmetic.

One x; y pair per line. Decimal point; comma, semicolon or whitespace as the separator. Distinct x values; absolute values up to 10¹².

High degree and clustered nodes can cause large oscillations or numerical error. Results outside the node interval are extrapolation and may be unreliable.

Polynomial interpolation from points

Enter 2–12 nodes, evaluate the interpolating polynomial, inspect normalized Newton coefficients and export the report.

Numerical Newton divided differences with normalized x coordinates. This is interpolation, not regression, smoothing or symbolic exact arithmetic.

Quick start

Interpolate 2–12 points and inspect the numerical result.

  1. Enter distinct x and y pairs
  2. Choose the evaluation point
  3. Calculate, inspect extrapolation and export

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