 Lagrange interpolation polynomial

ID: lagrange-interpolation-polynomial

Codex  0 Created 2026-09-24 Updated 2026-10-06

The interpolating polynomial is

p_{n} (x) = \sum_{j = 0}^{n} f (x_{j}) \prod_{0 \leq i \leq n i \neq = j} \frac{x - x _{i}}{x _{j} - x _{i}} .

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