Rapid computation of general interpolation formulas and mechanical quadrature rules

  • Authors:
  • Sven-Åke Gustafson

  • Affiliations:
  • Royal Institute of Technology, Stockholm

  • Venue:
  • Communications of the ACM
  • Year:
  • 1971

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Abstract

Let ƒ have n continuous derivatives on a closed interval [a, b] and let L be a linear functional. The attempt is made to approximate L(ƒ) with L(Q) where Q is a polynomial, approximating ƒ. Algorithms are developed for rapid computation of L(Q) for a wide class of selections of Q which includes the Lagrangian and Hermitian rules as special cases.