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Re: Difficulties with Re

  • To: mathgroup at smc.vnet.net
  • Subject: [mg98365] Re: Difficulties with Re
  • From: Jeremy <jackms16 at hotmail.com>
  • Date: Wed, 8 Apr 2009 05:01:08 -0400 (EDT)
  • References: <grcgjq$pmv$1@smc.vnet.net>

It works if you expand (x + I y)^2, as follows.
Assuming[x > 0 && y > 0, Re[Exp[Expand[(x + I y)^2]]] // Simplify]

I am not sure why it doesn't work if you don't expand.  Re can be
finicky about evaluating sometimes.


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