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MathGroup Archive 2002

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non zero result after multiplying with zero.

  • To: mathgroup at smc.vnet.net
  • Subject: [mg36420] non zero result after multiplying with zero.
  • From: rajgupta121 at rediffmail.com (Raj)
  • Date: Fri, 6 Sep 2002 03:16:50 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Hi everybody,

  When I multiply an expression with 0 it is giving 0.expression which
is creating problem in the further calculation.

eg.

In[1]:=func1[r_]:=Exp[-r/2]
In[2]:coeff[[1,1]]=0.0;
;
;
In[34]:=func1[r]coeff[[1,1]]

Out[34]:=0.Exp[-r/2]

I want anything to be multiply by zero must be zero.

   How can I do that? 
Your suggestion will be highly appreciated.

   Thanks in advance,

  Raj


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