## Introduction

In the world of mathematics, sequences are an essential concept, and understanding the common ratio in a sequence is a crucial skill. The common ratio is the factor by which each term in a sequence is multiplied to obtain the next term. In this article, we will explore the concept of the common ratio, its formula, and provide HTML code that allows you to calculate it effortlessly.

## How to Use

To calculate the common ratio of a sequence, you can use the provided HTML code within a <form> and <script> format. The code includes a clickable button that, when pressed, computes the common ratio based on the values you input for the terms a(n+1) and a(n). Here’s a step-by-step guide on how to use it:

- Input the value of a(n+1) in the designated input field.
- Input the value of a(n) in the corresponding input field.
- Click the “Calculate Common Ratio” button.

The HTML code will then execute the calculation formula and display the common ratio.

## Formula

The formula to calculate the common ratio (cr) in a sequence is straightforward:

**Common Ratio Formula**

Where:

- cr represents the common ratio.
- a(n+1) is the value of the next term in the sequence.
- a(n) is the value of the current term in the sequence.

## Example

Let’s walk through an example to illustrate how the common ratio is calculated using the HTML code and the formula. Suppose you have a sequence where a(n+1) is 16, and a(n) is 4. Follow these steps:

- Input 16 for a(n+1) in the designated input field.
- Input 4 for a(n) in the corresponding input field.
- Click the “Calculate Common Ratio” button.

The HTML code will execute the formula and display the result. In this case, the common ratio will be 4 because 16 / 4 = 4.

### FAQ’s

**Q1: What is the significance of the common ratio in a sequence?**

The common ratio helps determine how each term in a sequence is related to the previous term. It is essential for understanding the growth or decay pattern of a sequence.

**Q2: Can the common ratio be negative or zero?**

Yes, the common ratio can be negative, zero, or positive, depending on the sequence. It represents the factor by which terms change from one to the next.

**Q3: How can I use the common ratio in real-life applications?**

Common ratios are commonly used in finance, physics, and engineering to model exponential growth, decay, or progressions.

### Conclusion

Understanding the common ratio in a sequence is a fundamental concept in mathematics. With the provided HTML code, you can easily calculate the common ratio for any given sequence. This article has introduced the concept, explained how to use the HTML code, provided the formula, and demonstrated its application with an example. You’re now well-equipped to work with common ratios in sequences and apply this knowledge to various real-life scenarios.