log expression not simplified

*To*: mathgroup at smc.vnet.net*Subject*: [mg115656] log expression not simplified*From*: Praeceptor <gianluca.cruciani at poste.it>*Date*: Mon, 17 Jan 2011 05:41:37 -0500 (EST)

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...)!