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MathGroup Archive 2001

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AW: Re: Expanding Trig Power Identities

  • To: mathgroup at smc.vnet.net
  • Subject: [mg30396] AW: [mg30365] Re: [mg30348] Expanding Trig Power Identities
  • From: Matthias.Bode at oppenheim.de
  • Date: Wed, 15 Aug 2001 01:04:03 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Dear Colleagues,

I tried Bob Hanlon's TrigReduce Table changing n from "{n, 4}" to "{n, 1, 3,
0.5}":

Table[{y = Sin[a]*Sin[b]^n, "=", TrigReduce[y]}, {n, 1, 3, 0.5}] //
TableForm

and neither the integer nor the non-integer exponent expressions evaluated
whereas the original example "{n, 4}" evaluates just fine. Why?

Best regards,

Matthias Bode
Sal. Oppenheim jr. & Cie. KGaA
Koenigsberger Strasse 29
D-60487 Frankfurt am Main
GERMANY
Tel.: +49(0)69 71 34 53 80
Mobile: +49(0)172 6 74 95 77
Fax: +49(0)69 71 34 63 80
E-mail: matthias.bode at oppenheim.de
Internet: http://www.oppenheim.de





-----Ursprungliche Nachricht-----
Von: BobHanlon at aol.com [mailto:BobHanlon at aol.com]
Gesendet: Sonntag, 12. August 2001 08:30
An: mathgroup at smc.vnet.net
Betreff: [mg30365] Re: [mg30348] Expanding Trig Power Identities


Table[{y = Sin[a]*Sin[b]^n, "=", TrigReduce[y]}, {n, 4}] // TableForm

Table[{y = Cos[a]*Cos[b]^n, "=", TrigReduce[y]}, {n, 4}] // TableForm


Bob Hanlon
Chantilly, VA  USA


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