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Re: Integrate[ ] returns If[ ] function; how to say it's True?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg9445] Re: Integrate[ ] returns If[ ] function; how to say it's True?
  • From: hans.steffani at e-technik.tu-chemnitz.de (Hans Steffani)
  • Date: Thu, 6 Nov 1997 02:39:55 -0500
  • Organization: University of Technology Chemnitz, FRG
  • Sender: owner-wri-mathgroup at wolfram.com

Daniel Lichtblau <danl at wolfram.com> writes:

>To get the second element from the If[...] result, one can simply use
>Part to extract it:

>In[23]:= ee = If[a,b,c]
>Out[23]= If[a, b, c]

>In[24]:= ee[[2]]
>Out[24]= b

ee = If[a,b,c]
ee /. a->True

or

ee = If[a,b,c]
ee /. ee[[1]]->True

h.f.s.
--
Hans Friedrich Steffani
Institut fuer Elektrische Maschinen und Antriebe, TU Chemnitz
mailto:hans.steffani at e-technik.tu-chemnitz.de
http://www.tu-chemnitz.de/~hfst/


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