Re: log expression not simplified
- To: mathgroup at smc.vnet.net
- Subject: [mg115666] Re: log expression not simplified
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Tue, 18 Jan 2011 05:47:13 -0500 (EST)
I don't know why it doesn't work; however, you can force it with PowerExpand
Log[a/b]/Log[b/a] // PowerExpand // Simplify
-1
Bob Hanlon
---- Praeceptor <gianluca.cruciani at poste.it> wrote:
=============
Sorry, can anybody help me understand why
Simplify[Log[a/b]/Log[b/a], Assumptions -> {a > 0, b > a}]
doesn't reduce to -1 ??
Thanks (it's for a simple Carnot cycle calculation...)!