Re: Simplify Log[ab] - Log[b] to Log[a] ?

*To*: mathgroup at smc.vnet.net*Subject*: [mg16049] Re: [mg16039] Simplify Log[ab] - Log[b] to Log[a] ?*From*: BobHanlon at aol.com*Date*: Mon, 22 Feb 1999 01:44:31 -0500*Sender*: owner-wri-mathgroup at wolfram.com

In a message dated 2/21/99 8:52:18 AM, simon at allfrey13.freeserve.co.uk writes: >How do I persuade Mathematica to simplify > >Log[a b] - Log[b] to Log[a]? > >when processing algebraic expressions? > Log[a*b] - Log[b] /. Log[x_*y_] -> Log[x] + Log[y] or Log[a*b] - Log[b] /. Log[x_]- Log[y_] -> Log[x/y] or Log[a*b] - Log[b] // PowerExpand Bob Hanlon