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 >