Re: Question: ABS and \[Prime]

*To*: mathgroup at smc.vnet.net*Subject*: [mg47482] Re: Question: ABS and \[Prime]*From*: "Jens-Peer Kuska" <kuska at informatik.uni-leipzig-de>*Date*: Wed, 14 Apr 2004 07:16:30 -0400 (EDT)*Organization*: Uni Leipzig*References*: <c5gfrm$apq$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Hi, it is the fist derivative of Abs[z] with respect to z. Regards Jens "Ed Wells" <wellsed at wam.umd.edu> schrieb im Newsbeitrag news:c5gfrm$apq$1 at smc.vnet.net... > Hello, > > I'm not a regular duty Mathematica user and I've come across a problem > in some of my work to which I cannot find an answer in Mathematica > help or by googling. > > In my notebook output, a copy of which can be seen at : > > www.glue.umd.edu/~wellsed/derivatives.html > > I'm finding the derivatives of a complex function involving distances > (R[] is a distance function) in an energy function (W[] is an energy > function). Each of my derivatives looks okay except for the presence > of the Abs[] function with a \[Prime] following it. It does not > appear in every instance, but I cannot find any documentation for what > this may mean. An example is in the first line of Out[36]. > > Any help is appreciated. > > --Ed Wells >