algint.doc 1.6 KB

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  1. ALGINT
  2. A Package for the Analytic Integration of Expressions Involving Square Roots
  3. James H. Davenport
  4. Mathematical Sciences
  5. University of Bath
  6. Claverton Down
  7. Bath, BA2 7AY
  8. GREAT BRITAIN
  9. E-mail:jhd@uk.ac.bath.maths
  10. (redirect via ucl-cs.arpa or ...!mcvax!ukc)
  11. ALGINT is an extension of the standard REDUCE integration package for the
  12. integration of expressions involving square roots where the answer exists
  13. in that class of functions. It is an implementation of the work described
  14. in [Davenport 1981]. Both this and the source code should be consulted for
  15. a more detailed description of this work.
  16. To use this package, the command
  17. LOAD ALGINT;
  18. should be used. The form of this command may vary according to
  19. implementation. One then enters an expression for integration, e.g.:
  20. INT(SQRT(X+SQRT(X**2+1)/X,X);
  21. If one later wishes to integrate expressions without using the facilities of
  22. this package, the switch ALGINT should be turned off. This is turned on
  23. automatically when the package is loaded.
  24. The switches supported by the standard integrator (e.g., TRINT) are also
  25. supported by this package. In addition, the switch TRA, if on, will give
  26. further tracing information about the specific functioning of the algebraic
  27. integrator.
  28. REFERENCES
  29. Davenport, 1981 Davenport, J.H., "On the Integration of Algebraic
  30. Functions", LNCS 102, Springer 1981.