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Full simplify problem

• To: mathgroup at smc.vnet.net
• Subject: [mg122261] Full simplify problem
• From: "A. Lapraitis" <ffcitatos at gmail.com>
• Date: Sat, 22 Oct 2011 06:09:48 -0400 (EDT)
• Delivered-to: l-mathgroup@mail-archive0.wolfram.com

Hello,

Could anyone explain why the following does not give zero?

In[72]:= Assuming[
 x == y + z,
 FullSimplify[
  E^x - E^(y + z)
  ]
 ]

Out[72]= E^x - E^(y + z)

Thanks!

• Follow-Ups:
  • Re: Full simplify problem
    • From: DrMajorBob <btreat1@austin.rr.com>
  • Re: Full simplify problem
    • From: Andrzej Kozlowski <akoz@mimuw.edu.pl>