Fibonacci Numbers & Sequences Quiz

Questions and Answers

What condition must be satisfied for a sequence to be considered an arithmetic progression?

The sum of any two terms is constant.

Each term differs from the next by a fixed ratio.

Each term is the product of the previous two terms.

Each term differs from the next by the same, fixed quantity. (correct)

In a geometric progression, how is each term related to its preceding term?

By a fixed difference.

By a fixed ratio. (correct)

They are all equal.

By a variable factor.

Which of the following equations correctly defines a recurrence relation?

$a_n = 3n + 2$

$a_n = 4^n - 1$

$a_n = n^2$

$a_n = a_{n-1} + 5$ (correct)

If the Fibonacci sequence starts with $F_1 = 1$ and $F_2 = 1$, what is the value of $F_5$?

8 Signup and view all the answers

What is the nth term of the sequence defined by $a_n=3+4(n-1)$?

$4n - 1$ Signup and view all the answers

Which term corresponds to $a_5$ if defined by the recurrence $a_n = a_{n-1} - a_{n-3}$ with $a_1 = 1$, $a_2 = 3$, and $a_3 = 10$?

7 Signup and view all the answers

When applying Binet’s formula to find the nth term of the Fibonacci sequence, which concept is crucial?

Using a mathematical constant known as the Golden Ratio. Signup and view all the answers

What characterizes the Fibonacci numbers in relation to the Golden Ratio?

The ratio of consecutive Fibonacci numbers approaches the Golden Ratio. Signup and view all the answers

What is the correct sequence that follows F2, E4, D8, C16?

B32 Signup and view all the answers

What does the Fibonacci rabbit problem illustrate about rabbit population growth?

Population grows exponentially after the first month. Signup and view all the answers

How is the Fibonacci sequence initiated according to Fibonacci's original method?

1 and 1 Signup and view all the answers

Which of the following numbers is the 19th term in the Fibonacci sequence?

4181 Signup and view all the answers

What form does the golden ratio typically take in a golden rectangle?

Ratio of sides as approximately 1.618:1 Signup and view all the answers

What is the nth term formula for Fibonacci numbers?

Fn = Fn-1 + Fn-2 Signup and view all the answers

Which statement accurately describes the relationship between Fibonacci numbers and the golden ratio?

The ratio of consecutive Fibonacci numbers approaches the ratio of the golden ratio as n increases. Signup and view all the answers

In which publication did Fibonacci introduce the sequence that bears his name?

The Book of Calculating Signup and view all the answers

Study Notes

Fibonacci Numbers & the Golden Ratio

Mathematics is about understanding patterns and relationships, not just solving problems.
Learning objectives include articulating sequences, understanding Fibonacci's contributions, and exploring the relationship between Fibonacci numbers and the Golden Ratio.

Sequences and Recurrence Relation

A sequence is a function mapping integers to a set of values, denoted as (a_n).
Recurrence relations define sequences based on previous terms; the simplest form depends on just the immediately preceding term.
Example: If (a_1 = 1), (a_2 = 3), and (a_n = a_{n-1} - a_{n-3}), compute (a_5).

Arithmetic and Geometric Sequences

Arithmetic sequences have a constant difference between terms. Formula: (a_n = m n + a_1).
Example of arithmetic progression: 3, 8, 13, 18, 23, 28...
Geometric sequences have a constant ratio between subsequent terms. Example: (a_1 = 10), (a_2 = 30) where (a_n = 10 \cdot 3^{n-1}).