Re: Simplify problems for checking easy equalities...
- To: mathgroup at smc.vnet.net
- Subject: [mg53864] Re: Simplify problems for checking easy equalities...
- From: "Steve Luttrell" <steve_usenet at _removemefirst_luttrell.org.uk>
- Date: Tue, 1 Feb 2005 04:08:14 -0500 (EST)
- References: <email@example.com>
- Sender: owner-wri-mathgroup at wolfram.com
Your expression does not simplify to zero in general. However, the following does what I suspect you require: Simplify[Log[x^n] - n*Log[x], x>0 && n \[Element] Integers] Steve Luttrell "Cyrus Erik Eierud" <cyruserik at tele2.se> wrote in message news:cti5nd$8n2$1 at smc.vnet.net... > Please Help! > > Thanks for all great answers I've already found here! > My problem is that I can not simplify what to me seems as a very > simple equality task. This is what I want Mathematica to return zero > for: > > in:= FullSimplify[Log[x^n] - n*Log[x]] > > out= -n Log[x] + Log[x^n]) > > I have used Simplify to check equalities, but the one above (and many > other equations similar to the one above) just don't simplify. Am I > doing anything wrong or does anyone know of a better way to check > equalities? > > Appreciate any help, > Cyrus Eierud, Student > cyruserik at tele2.se >