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Can Mathematica evaluate step by step???

  • To: mathgroup at smc.vnet.net
  • Subject: [mg29372] Can Mathematica evaluate step by step???
  • From: "Neri Kafkafi" <NKafkafi at intra.nida.nih.gov>
  • Date: Fri, 15 Jun 2001 02:23:41 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Assume I define:
myfunction:=2a

and at some later time:
a=4

Now if I evaluate myfunction I get 8.
If I evaluate Hold[myfunction] I get myfunction.

My question is, how do I get 2a ?

In other words, I want to get the symbolic definition of myfunction, whether
a is defined or not.

In (yet) other words, I want to evaluate myfunction only one step further,
up to 2a, but not all the way to 8.

Is this possible in Mathematica?

Thanks in advance,
Neri






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