Re: Simplify Log[ab] - Log[b] to Log[a] ?
- To: mathgroup at smc.vnet.net
- Subject: [mg16058] Re: Simplify Log[ab] - Log[b] to Log[a] ?
- From: Paul Abbott <paul at physics.uwa.edu.au>
- Date: Tue, 23 Feb 1999 03:45:17 -0500
- Organization: University of Western Australia
- References: <7ao3po$rv0@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Simon Allfrey wrote: > How do I persuade Mathematica to simplify > > Log[a b] - Log[b] to Log[a]? > > when processing algebraic expressions? Use PowerExpand: In[1]:= Log[a b] - Log[b]//PowerExpand Out[1]= Log[a] As another example, In[2]:= Log[a b/c] - Log[b]//PowerExpand Out[2]= Log[a] - Log[c] Cheers, Paul ____________________________________________________________________ Paul Abbott Phone: +61-8-9380-2734 Department of Physics Fax: +61-8-9380-1014 The University of Western Australia Nedlands WA 6907 mailto:paul at physics.uwa.edu.au AUSTRALIA http://www.physics.uwa.edu.au/~paul God IS a weakly left-handed dice player ____________________________________________________________________