From fe48203c63c543f1c975f329d07306da7ad0950d Mon Sep 17 00:00:00 2001 From: Christian Bauer Date: Thu, 11 May 2000 23:22:20 +0000 Subject: [PATCH 1/1] - mentioned "Derivative" function --- NEWS | 2 ++ 1 file changed, 2 insertions(+) diff --git a/NEWS b/NEWS index 0489cb5b..04f3e559 100644 --- a/NEWS +++ b/NEWS @@ -16,6 +16,8 @@ This file records noteworthy changes. * ex::to_rational() provides a way to extend the domain of functions like gcd() and divide() that only work on polynomials or rational functions (the good old ex::subs() method reverses this process) +* Calling diff() on a function that has no derivative defined returns the + inert derivative function "Derivative". * Several new timings in the check target. Some of them may be rather rude at your machine, feel free to interrupt them. -- 2.44.0