As I recall, there are some VERY simple toy examples in "Learning J", but for serious use I don't see why you wouldn't use a CAS system, especially since there are free ones available. See
http://en.wikipedia.org/wiki/Comparison_of_computer_algebra_systems ------------------------ Philip A. Viton City Planning, Ohio State University 275 West Woodruff Avenue, Columbus OH 43210 [EMAIL PROTECTED] ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
