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Mathematicas simplifications

  • To: mathgroup at
  • Subject: [mg96279] Mathematicas simplifications
  • From: Kilian Kilger <kilian at>
  • Date: Tue, 10 Feb 2009 05:56:39 -0500 (EST)


if I type in Mathematica 7 for example


It gives me 


as a response, which is wrong. If I type

f[n_] := Select[Divisors[n],SquareFreeQ]

and then 


it gives me 


which is correct. If I type (afterwards)


again the wrong answer "Divisors[n]" is shown. What am I doing wrong? Same happens in many other circumstances. 

Thanks in advance,

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