MathGroup Archive 2002

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

Search the Archive

Re: simplify expr to = 1

  • To: mathgroup at smc.vnet.net
  • Subject: [mg37952] Re: simplify expr to = 1
  • From: "Steve Luttrell" <luttrell at _removemefirst_westmal.demon.co.uk>
  • Date: Thu, 21 Nov 2002 00:38:28 -0500 (EST)
  • References: <arequi$1a4$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Because when r is not equal to an integer the (f[x]/g[x])^r and
(g[x]/f[x])^r factors could lie on different branches of the
raise-to-the-power function. If you want to force a default choice of branch
then use PowerExpand as follows:

PowerExpand[(f[x]/g[x])^r * (g[x]/f[x])^r]

Steve Luttrell

"Blimbaum Jerry DLPC" <BlimbaumJE at ncsc.navy.mil> wrote in message
news:arequi$1a4$1 at smc.vnet.net...
> Why duzz Mathematica not simplify    (f[x]/g[x])^r * (g[x]/f[x])^r   to
> equal 1  for r specified as belonging to Reals?   For r specified as
> Integer, however,  it  duzz reduce to 1....
>
>
> jerry blimbaum   NSWC panama city, fl
>




  • Prev by Date: Re: simplify expr to = 1
  • Next by Date: Data storage in ListPlots and Exported EPS graphics?
  • Previous by thread: Re: simplify expr to = 1
  • Next by thread: GlobalOptions disabled