Question

The fibonnacci numbers fn are defined by fn+2=fn+1+fn

Answer 1

Answer:

In mathematics, the Fibonacci numbers, commonly denoted Fn form a sequence, called the Fibonacci sequence, such that each number is the sum of the two preceding ones, starting from 0 and 1. That is,[1]

{\displaystyle F_{0}=0,\quad F_{1}=1,} {\displaystyle F_{0}=0,\quad F_{1}=1,}

and

{\displaystyle F_{n}=F_{n-1}+F_{n-2},} {\displaystyle F_{n}=F_{n-1}+F_{n-2},}

for n > 1.

One has F2 = 1. In some books, and particularly in old ones, F0, the "0" is omitted, and the Fibonacci sequence starts with F1 = F2 = 1.

Answer 2

Step-by-step explanation:

$\sf : \implies {-i\ =\ \Bigg \{ \dfrac{ \Bigg( e^{\dfrac{2{\pi}}{11}\ -\ 1 \Bigg)}{1\ -\ 11} \Bigg \}}$