Re: Abs function
- To: mathgroup at smc.vnet.net
- Subject: [mg47267] Re: Abs function
- From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
- Date: Fri, 2 Apr 2004 03:30:10 -0500 (EST)
- Organization: Universitaet Leipzig
- References: <c4ge4p$5a$1@smc.vnet.net>
- Reply-to: kuska at informatik.uni-leipzig.de
- Sender: owner-wri-mathgroup at wolfram.com
Hi, tha mean that the derivative of Abs[] can be different for real and complex arguments. For real arguments you have D[Abs[x], x] // FullSimplify[#, Element[x, Reals]] & Sign[x] Regards Jens nikmatz wrote: > > Hi, > > i try to find the derivative of abs function > > D[Abs[x],x] > > and Mathematica answer > Abs`[x] > > what mean that > > Thanks