Re: 'strange' simplification problems - why?
- To: mathgroup at smc.vnet.net
- Subject: [mg22993] Re: 'strange' simplification problems - why?
- From: John Doty <jpd at w-d.org>
- Date: Sun, 9 Apr 2000 01:45:55 -0400 (EDT)
- Organization: Wampler-Doty Family
- References: <8cnv5c$5bp@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
lobozc at my-deja.com wrote:
> a) lmb^k*(mu^(-1))^k is just a longwinded way of saying (lmb/mu)^k -
> and I get the long form also after FullSimplify. What am I doing wrong
> here? how could I get that to the simpler form? [short of replacing it
> by hand]
>
FullSimplify[] can't do this: it isn't always valid (see what happens when
{lmb->-1,mu->-1,k->1/2}). With integral k it's valid, so:
Simplify[lmb^k*(mu^(-1))^k ,Element[k,Integers]]
does what you want.
--
John Doty "You can't confuse me, that's my job."
Home: jpd at w-d.org
Work: jpd at space.mit.edu