Re: Re: Complex conjugate differentiation
- To: mathgroup at smc.vnet.net
- Subject: [mg107225] Re: [mg107185] Re: [mg107163] Complex conjugate differentiation
- From: Mark McClure <mcmcclur at unca.edu>
- Date: Fri, 5 Feb 2010 07:48:36 -0500 (EST)
- References: <201002041128.GAA29970@smc.vnet.net>
On Fri, Feb 5, 2010 at 3:20 AM, Daniel Lichtblau <danl at wolfram.com> wrote: > Paperorbifold wrote: >> In[1]:=D[z z*, z*] >> Out[1]=z >> where z*=Conjugate[z], > > Not sure if this is optimal, but I'd recommend using a different > variable to denote Conjugate[z] (your z*), then substituting for it > afterward. > Example: > In[10]:= D[z*w, z] /. w -> Conjugate[z] > Out[10]= Conjugate[z] But z->z* and z->z*z are nowhere differentiable complex functions. Why should be expect anything sensical out of this computation? Mark McClure
- References:
- Complex conjugate differentiation
- From: Paperorbifold <kgodelNOSPAM@liberoNOSPAM.it>
- Complex conjugate differentiation