Dear Richard,
On Tue, 05 Nov 2013 09:02:12 +0100, "Richard B. Kreckel" <kreckel@ginac.de> said:
RK> Hi Vladimir, On 11/05/2013 08:11 AM, Vladimir V. Kisil wrote: >> Further to my previous patch on functions derivatives, this small >> patch adds the rule >> >> conjugate(f)'=conjugate(f') RK> This patch is inconsistent with the rest of RK> inifcns_trans.cpp. Please search for "branch cut" inside that RK> file. RK> Now, subs(log(conjugate(x))-conjugate(log(x)), x==-1) evaluates RK> to 2*I*Pi. With your patch, it would evaluate to 0. I could not see how this expression is connected to derivative. It does evaluates to (2*I)*Pi with the proposed patch. Best wishes, Vladimir -- Vladimir V. Kisil email: kisilv@maths.leeds.ac.uk www: http://www.maths.leeds.ac.uk/~kisilv/ Book: Geometry of Mobius Transformations http://www.worldscientific.com/worldscibooks/10.1142/p835