Fibbonacci Series

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Algebra I

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Fibbonacci Series

Leonardo Pisano, or best known as: Fibbonacci, was an Italian number theorist. He was of the first people in all the world that introduced the Hindu-Arabic number system to Europe.

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Fibbonacci created a book called: Liber Abbaci, were he explains practically all the methods we learned for dividing, multiplying, adding, and subtracting.

Fibbonacci's Inspiration IdeaFibbonacci was inspired by the idea of the reproduction of the rabbits.

Leonardo Pisano (Italian) was born in Pisa, Italy. His father was a kind of customs officer. Leonardo growed as a child with an North African education. He lived around 1170 and 1250.

Fibbonacci's Series

Fibbonacci SequenceThis is the fibbonaci sequence:0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, and so on.The fibbonacci sequence works by adding the 2 numbers before each number. Example: 2 is composed by adding the two before numbers: 1+1. 3 by adding 1+2. 5 by adding 2+3, 8 by adding 5+3, etc.

The Golden RatioWhen you divide two Fibbonacci numbers that are placed one after the other, it will usually give you an answer arround the Golden Ratio, which is 1.618034. We can also call it the divine proportion, golden mean, and mean ratio.

Examples of the Fibonacci SeriesOne example of the fibbonacci series is a flower. The petals are always fibbonacci numbers. Imagine, you can't find a flower with 4, 6, 7, 9, etc petals.

Examples of the Fibonacci SeriesAnother example is the corn, since it grows in straight rows. But not all the fruits and vegtables are examples of the fibonacci series.

Examples of the Fibonacci SeriesAn example can be our hands. The largest bone segment measures 8 cm. The next one 5, then 3, and the nail too. This are fibonacci numbers.

Paulina González, 7D #15



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