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MathGroup Archive 2012

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Re: Finding the real part of a symbolic complex expression

  • To: mathgroup at smc.vnet.net
  • Subject: [mg126595] Re: Finding the real part of a symbolic complex expression
  • From: Cisco Lane <travlorf at yahoo.com>
  • Date: Tue, 22 May 2012 05:20:12 -0400 (EDT)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com

I think it needs to be simplified in order to get the assumptions to kick in. Also, Mathematica doesn't know to expand, so I would write:

Assuming[Element[{a, b, c, d}, Reals],Simplify[Re[Expand[(a + I b) (c + I d)]]]]



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