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MathGroup Archive 2007

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Re: Weird Print Result

  • To: mathgroup at smc.vnet.net
  • Subject: [mg74183] Re: Weird Print Result
  • From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
  • Date: Tue, 13 Mar 2007 05:12:16 -0500 (EST)
  • Organization: The Open University, Milton Keynes, UK
  • References: <et36rq$qgu$1@smc.vnet.net>

Bruce Colletti wrote:
> Re Mathematica 5.2 under WinXP.
> 
> The code below creates the correct output, except for a strange concluding "4 Null."
> 
> What does this weird last line of output mean (list length?), why does it print, and how can it be suppressed?
> 
> Thankx.
> 
> Bruce
> 
> 
> n = 2;
> T = Array[p, {n, n}];
> X0 = Array[x, {n}];
> X = (Expand /@ (X0.MatrixPower[T, 2]));
> Print /@ X[[1]]
> 

Add a semi-column at the end of the last expression:

In[1]:=
n = 2;
T = Array[p, {n, n}];
X0 = Array[x, {n}];
X = Expand /@ (X0 . MatrixPower[T, 2]);
Print /@ X[[1]];

Regards,
Jean-Marc


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