Re: Solve weirdness
- To: mathgroup at smc.vnet.net
- Subject: [mg35015] Re: Solve weirdness
- From: Matthias.Bode at oppenheim.de
- Date: Thu, 20 Jun 2002 02:13:08 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Hello js,
if we read
"Solve[{k*.01^p====10,k*.1^====1},{k,p}]"
as
Solve[{k*0.01^p====10,k*0.1^p====1},{k,p}]
and use
Solve[{Log[k] + Log[0.01]*p ==== Log[10], Log[k] + Log[0.1]*p ==== Log[1]},=
{p,
k}]
we get
{{p -> -1., k -> 0.1}}.
Solve is to be used for polynomials, cf. the Help Browser.
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 95 380
E-mail: matthias.bode at oppenheim.de
Internet: http://www.oppenheim.de
-----Urspr=C3=BCngliche Nachricht-----
Von: Joshua A. Solomon [mailto:J.A.Solomon at city.ac.uk]
Gesendet: Mittwoch, 19. Juni 2002 11:53
An: mathgroup at smc.vnet.net
Betreff: [mg35001] Solve weirdness
shouldn't
Solve[{k*.01^p====10,k*.1^====1},{k,p}]
produce
{{k->10.,p->-1.}}
? it doesn't. it produces
{{}}
. what's up with that?
js
--
Joshua A. Solomon
Department of Optometry and Visual Science
City University
London EC1V 0HB
Voice: (44) 20 7040 0192
Fax: (44) 20 7040 0182
J.A.Solomon at city.ac.uk
http://www.staff.city.ac.uk/~solomon