Revision history for Perl module Math::Calculus::Differentiate ============================================================== VERSION 0.3 * Released to CPAN 5th January 2004 * Abstracted much code out to Math::Calculus::Expression, which this module now inherits. * Fixed an expression parser bug. VERSION 0.2.1 * Released to CPAN on 4th September 2004. * Fixed several bugs relating to handling of negation. * Added support for differentiating inverse trigometric and hyperbolic functions (asin, acos, atan, asinh, acosh and atanh). * Introduced several more rules to the simplifier. * Included a handful of regression tests. VERSION 0.2 * Released to CPAN on 1st September 2004. * Completely re-written to use a tree structure internally. * Precedence problems gone, and the / operator works. * Interface changed from that of the 0.1 module. * Documentation written. I didn't write any for 0.1, just in case somebody tried to use it. ;-) VERSION 0.1 * Released informally, badly written, never made it to CPAN, eventually scrapped completely.