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Fibonacci's Forgotten Number Revisited

by Richard Maruszewski (United States Naval Academy)

This article originally appeared in:
College Mathematics Journal
September, 2009

Subject classification(s): Mathematics History
Applicable Course(s): 4.0 Advanced Mathematics | 4.8 History of Math

The author describes two methods that Fibonacci might have used to find an approximate solution to a cubic equation posed in the court of the Holy Roman Emperor, Fredrick II in 1225.

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