Re: Abs and variables
- To: mathgroup at smc.vnet.net
- Subject: [mg4278] Re: Abs and variables
- From: vvs124 at rsphy1.anu.edu.au (Victoria.Steblina) (Victoria Steblina)
- Date: Sat, 29 Jun 1996 03:53:15 -0400
- Organization: Optical Sciences Centre, ANU
- Sender: owner-wri-mathgroup at wolfram.com
> How can I have the Abs function treat real variables properly? >I seem to recall a way of declaring a variable real, but I don't >remember how. If there is such a way, would this work with Abs; i.e. >fix the variable a so that "Abs[a]" will give a result of "a"? How about this? In[114]:= Needs["Algebra`ReIm`"] In[115]:= Im[a]^=0; In[116]:= Re[a + I] Out[116]= a Vicki ________________________________________________________________________ Victoria Steblina Email: vvs124 at rsphy1.anu.edu.au Optical Sciences Centre Tel: 61 6 249 5129 Australian National University Fax: 61 6 249 5184 ==== [MESSAGE SEPARATOR] ====