Services & ResourcesWolfram ForumsMathGroup Archive

[Date Index] [Thread Index] [Author Index]

proof of formula for log(-t) found in Mathematica?

• To: mathgroup at smc.vnet.net
• Subject: [mg48194] proof of formula for log(-t) found in Mathematica?
• From: "Roger L. Bagula" <rlbtftn at netscape.net>
• Date: Mon, 17 May 2004 03:22:07 -0400 (EDT)
• Sender: owner-wri-mathgroup at wolfram.com

I found this while doing work on complex exponents:

f(t)=Log[-t]=Log[t^2]/2+I*Arg[-t]

It is a result built into Mathematica.
I would like to see how it is derived as it seem counter intuitive in 
it's results.
Respectfully,
Roger L. Bagula

• Follow-Ups:
  • Re: proof of formula for log(-t) found in Mathematica?
    • From: Raul Martinez <rmartinez@vrinc.com>