Integration of rational functions: Rational computation of the logarithmic part

  • Authors:
  • D Lazard;R Rioboo

  • Affiliations:
  • -;-

  • Venue:
  • Journal of Symbolic Computation
  • Year:
  • 1990

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Abstract

A new formula is given for the logarithmic part of the integral of a rational function, one that strongly improves previous algorithms and does not need any computation in an algebraic extension of the field of constants, nor any factorisation since only polynomial arithmetic and GCD computations are used. This formula was independently found and implemented in SCRATCHPAD by B. M. Trager.