# Nth term formula for the Fibonacci Sequence, (all steps included), difference equation | Summary and Q&A

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July 13, 2017
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blackpenredpen
Nth term formula for the Fibonacci Sequence, (all steps included), difference equation

## TL;DR

This video explains the Fibonacci sequence, how to find terms using the recursive formula, and how to derive the explicit formula.

## Key Insights

• 🤑 The Fibonacci sequence is a mathematical concept where each number is the sum of the two preceding ones.
• 🍉 The recursive formula allows us to find terms in the sequence by adding the previous two terms.
• 💨 The explicit formula provides a direct way to calculate the value of a term based on its position.
• ❓ The explicit formula can be derived using the quadratic formula and the initial conditions of the sequence.
• 😀 The explicit formula involves using two distinct values of 'R' in its equation.
• ❓ The system of equations used to derive the explicit formula can be solved using the elimination method.
• 🍉 The explicit formula for the Fibonacci sequence can be used to find any term in the sequence.

## Transcript

this video I'll talk about the Fibonacci sequence and the most important thing is that our surrogates how to find it in language as we know the people 19 to 20 is 1 1 2 3 5 and so on and so on for example how to figure out this term we all have to create first you know 8 is the same as 3 plus 5 right and to figure this out it's the same as the sum ... Read More

## Questions & Answers

### Q: What is the Fibonacci sequence?

The Fibonacci sequence is a series of numbers where each number is the sum of the two preceding ones, starting with 0 and 1.

### Q: How do you find a term in the Fibonacci sequence using the recursive formula?

To find a term, you add the previous two terms together. For example, to find the 5th term, you add the 4th and 3rd terms.

### Q: What is the explicit formula for the Fibonacci sequence?

The explicit formula is a formula that directly calculates the value of a term based on its position. It can be derived using the quadratic formula and the initial conditions of the sequence.

### Q: How do you derive the explicit formula for the Fibonacci sequence?

To derive the explicit formula, you solve a system of equations using the initial conditions of the sequence. This involves finding the values of 'a' and 'b' in the formula and plugging them in.

## Summary & Key Takeaways

• The Fibonacci sequence is a series of numbers where each number is the sum of the two preceding ones.

• To find a term in the sequence using the recursive formula, you add the previous two terms together.

• The explicit formula for the Fibonacci sequence is a formula that directly calculates the value of a term based on its position in the sequence.