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Expand Exp[a(b-c)]

  • To: mathgroup at smc.vnet.net
  • Subject: [mg16940] Expand Exp[a(b-c)]
  • From: Cyril Fischer <fischerc at itam.cas.cz>
  • Date: Thu, 8 Apr 1999 02:32:41 -0400
  • Organization: Deja News - The Leader in Internet Discussion
  • Sender: owner-wri-mathgroup at wolfram.com

How can I expand Exp[a(b+c)] to E^(a b) E^(-a c).
There should be active a rule, which re-evaluate expanded result
back to E^(a b-a c).
PowerExpand does not work in this case.
Thanks,
Cyril Fischer

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