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Template:Sequence of the Day for May 25

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Intended for: May 25, 2013

Timetable

  • First draft entered by Alonso del Arte on March 24, 2012
  • Draft reviewed by Daniel Forgues on May 13, 2012; May 24, 2015
  • Draft to be approved by April 25, 2013
Yesterday's SOTD * Tomorrow's SOTD

The line below marks the end of the <noinclude> ... </noinclude> section.



A202300: Decimal expansion of the real root of
x 3  +  2 x 2  +  10 x  −  20
.
1.36880810782137...
Today, we could get a thousand digits of this number in any base we wanted just by pushing a few buttons. But in Fibonacci's day, it was quite an achievement to get this number correct to five sexagesimal places,
1 +
22
60
+
7
60 2
+
42
60 3
+
33
60 4
+
4
60 5
+
40
60 6
, approximately 1.3688081078532235 in decimal, which as you can see matches the correct answer to ten decimal places.