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MathGroup Archive 1996

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Re: ComplexExpand

  • To: mathgroup at smc.vnet.net
  • Subject: [mg5319] Re: [mg5302] ComplexExpand
  • From: Allan Hayes <hay at haystack>
  • Date: Wed, 27 Nov 1996 01:47:36 -0500
  • Sender: owner-wri-mathgroup at wolfram.com

neely at biomath.mdacc.tmc.edu (E. Neely Atkinson)
>Subject: [mg5302] ComplexExpand

>Can anyone explain to me why the following two
>examples behave differently? Thanks.
> In[1]:= ComplexExpand[Log[1 / E^x]]
> Out[1]= -x
>
> In[2]:= ComplexExpand[Log[1 / (2 E^x)]]
>              1
> Out[2]= Log[----]
>                x
>             2 E

Whatever the reason, Version 3.0 gives

ComplexExpand[Log[1/E^x]]
ComplexExpand[Log[1/(2 E^x)]]
Allan Hayes
hay at haystack.demon.co.uk
http://www.haystack.demon.co.uk


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