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MathGroup Archive 2007

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Re: Factorizing...

  • To: mathgroup at smc.vnet.net
  • Subject: [mg74094] Re: Factorizing...
  • From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
  • Date: Sat, 10 Mar 2007 06:46:20 -0500 (EST)
  • Organization: The Open University, Milton Keynes, UK
  • References: <esr0lj$6hp$1@smc.vnet.net>

Bruno Campanini wrote:
> How can I get it from Mathematica:
> 
> Factor[2+SQR(5)] = ((1+SQR(5))/2)^3

Using the correct syntax strongly helps. See " The Mathematica Book 
Online  /  A Practical Introduction to Mathematica  /  Numerical 
Calculations  /  1.1.3 Some Mathematical Functions" at 
http://documents.wolfram.com/mathematica/book/section-1.1.3

In[1]:=
Simplify[Factor[2 + Sqrt[5]] == ((1 + Sqrt[5])/2)^3]

[...disregard the warning message...]

Out[1]=
True

Regards,
Jean-Marc

[1] "The Mathematica Book /  A Practical Introduction to Mathematica  / 
  Numerical Calculations  /  1.1.3 Some Mathematical Functions", 
http://documents.wolfram.com/mathematica/book/section-1.1.3


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