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MathGroup Archive 2002

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Re: Notation for Log[b,n]

  • To: mathgroup at smc.vnet.net
  • Subject: [mg34920] Re: Notation for Log[b,n]
  • From: Mars.bbs at bbs.dartmouth.edu (FangQ)
  • Date: Wed, 12 Jun 2002 02:16:50 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

don't know dose this work for u:

Unprotect[Log];
Log[a_,b_]:=Hold[Log[a,b]];
Log[b,n]

>>-------  gleam at flashmail.com ("Mr. Wizard")  wrote:
: The expression Log[b,n] evaluates to Log[n]/Log[b].  I would like to
: replace this notation as the default with Log[b,n], such that not only
: will Log[b,n] evaluate to itself, but such that Simplify,
: FullSimplify, etc., will use the form Log[b,n] whenever applicable. 
: MakeBoxes is likely the correct function to use, but I don't know how
: to implement this change.  Please help.
: Paul


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