Out[1]=((5-Sqrt[5])/20 + (5+Sqrt[5])/20 ) == 1/2 ???

• To: mathgroup at smc.vnet.net
• Subject: [mg19976] Out[1]=((5-Sqrt[5])/20 + (5+Sqrt[5])/20 ) == 1/2 ???
• From: p_mclean at postoffice.utas.edu.au (Patrick McLean)
• Date: Thu, 23 Sep 1999 23:26:23 -0400
• Organization: Maths Dept, University of Tasmania
• Sender: owner-wri-mathgroup at wolfram.com

```Can any one explain this behaviour???

hilbert% math
Mathematica 3.0 for Solaris
-- Terminal graphics initialized --

In[1]:=   ( (5-Sqrt[5])/20 + (5+Sqrt[5])/20 ) == 1/2

\$MaxExtraPrecision::meprec:
\$MaxExtraPrecision = 50. reached while evaluating
1    5 - Sqrt[5]   5 + Sqrt[5]
-(-) + ----------- + -----------. Increasing the value of
2        20            20
\$MaxExtraPrecision may help resolve the uncertainty.

5 - Sqrt[5]   5 + Sqrt[5]    1
Out[1]= ----------- + ----------- == -
20            20         2

In[2]:=

--
Patrick McLean

No news is good news...

```

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