Question

Let Fib (n) be the nth term in the Fibonacci sequence , with Fib (1) = 1, Fib(2) = 1,
Fib (3) = 2, and so on.
3. Find Fib (19)

Answer 1

Answer:

Step-by-step explanation:

F(n)=$\frac{1}{\sqrt{5} } ((\frac{1+\sqrt{5} }{2})^n - ( \frac{1-\sqrt{5} }{2})^n)$

F(19)=$\frac{1}{\sqrt{5} } ((\frac{1+\sqrt{5} }{2})^(19) - ( \frac{1-\sqrt{5} }{2})^(19))$