RE: combining Log[] terms
- To: mathgroup at smc.vnet.net
- Subject: [mg30502] RE: [mg30482] combining Log[] terms
- From: "David Park" <djmp at earthlink.net>
- Date: Fri, 24 Aug 2001 04:06:00 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Nicolas, One method would be to use a replacement rule. 2*Log[a] - 3*Log[b] /. (k1_.)*Log[x_] + (k2_.)*Log[y_] -> Log[x^k1*y^k2] Log[a^2/b^3] David Park djmp at earthlink.net http://home.earthlink.net/~djmp/ > From: Nicolas Bock [mailto:nbock at acsu.buffalo.edu] To: mathgroup at smc.vnet.net > > Is there a function that combines terms like > > Log[a] - Log[b] > > to > > Log[a/b]? > > I couldn't find anything so far in the documentation regarding the > Log[] function, only some references to Collect[], which does > something similar to what I want for powers of a given expression. > > Thanks already for you help, > > nick >