Re: symbolic calculations with complex numbers

*To*: mathgroup at smc.vnet.net*Subject*: [mg31958] Re: [mg31937] symbolic calculations with complex numbers*From*: Andrzej Kozlowski <andrzej at tuins.ac.jp>*Date*: Fri, 14 Dec 2001 04:21:22 -0500 (EST)*Sender*: owner-wri-mathgroup at wolfram.com

In[207]:= ComplexExpand[Abs[p+ I q],TargetFunctions->{Re,Im}] Out[207]= 2 2 Sqrt[p + q ] Andrzej Kozlowski Toyama International University JAPAN http://platon.c.u-tokyo.ac.jp/andrzej/ On Thursday, December 13, 2001, at 03:08 PM, Roberto Dinapoli wrote: > Hello, > I've a problem: is there a way to convince mathematica to do symbolic > calculations and simplifications taking all symbolic variables as real? > example: > Abs[p+ I q] is not evaluated, I'd like to see : sqrt[ sqr[p]+sqr[q] ]... > > for all the calculations I have to do it's really important. > > Thanks a lot > Roberto > > > > >