Re: Working with Log

*To*: mathgroup at smc.vnet.net*Subject*: [mg112102] Re: Working with Log*From*: Bob Hanlon <hanlonr at cox.net>*Date*: Tue, 31 Aug 2010 04:14:17 -0400 (EDT)

PowerExpand[Log[a b c]] log(a)+log(b)+log(c) % //. Log[x_] + Log[y_] -> Log[x*y] log(a b c) Bob Hanlon ---- Themis Matsoukas <tmatsoukas at me.com> wrote: ============= I can use PowerExapnd to expand a Log: PowerExpand[Log[a b]] Log[a] + Log[b] How can I do the opposite, i.e. combine Log[a] + Log[b] into Log[a b]? Thanks Themis