J has supported symbolic differentiation and integration for some time.
Starting with Release 9.01, primitive support for calculus is withdrawn.
The calculus primitives were a proof-of-concept that was an incomplete
success. They worked, but they were not complete, and the nature of
mathematics is such that they will never be complete. It has long been
clear that they should have been implemented in a J script, which would
be much easier to expand & maintain.
The primitives for Taylor series - t. t: T. - are terminated with
extreme prejudice.
The primitives for differentiation and integration - d. D. D: - are also
removed, but they are going to a Better Place. A new addon,
math/calculus, is now available. It provides most of the features of
the calculus primitives. Interested users are encouraged to fix &
expand this addon to give support for more methods of integration and
differentiation.
Henry Rich
---
This email has been checked for viruses by AVG.
https://www.avg.com
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
