RE: proof of formula for log(-t) found in Mathematica?
- To: mathgroup at smc.vnet.net
- Subject: [mg48281] RE: [mg48194] proof of formula for log(-t) found in Mathematica?
- From: "Dr A.H. Harker" <a.harker at ucl.ac.uk>
- Date: Fri, 21 May 2004 03:54:29 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Is it really built into Mathematica? Certainly V5.0, given
Log[-t] == Log[t^2]/2 + I*Arg[-t]
does not return True. Which is just as well, as t^2 and the square
modulus of t are not the same (unless t happens to be real).
Dr A.H. Harker
Director of Postgraduate Studies
Deputy Head, Condensed Matter and Materials Physics Group
Department of Physics and Astronomy
University College London
(44)(0)207 679 3404
a.harker at ucl.ac.uk
From: Roger L. Bagula [mailto:rlbtftn at netscape.net]
To: mathgroup at smc.vnet.net
Subject: [mg48281] [mg48194] proof of formula for log(-t) found in Mathematica?
I found this while doing work on complex exponents:
It is a result built into Mathematica.
I would like to see how it is derived as it seem counter intuitive in
Roger L. Bagula
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