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693
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Updated Mar 15, 2026
•
Scarlett
@scarletta
A comprehensive guide to arithmetic, geometric, and quadratic sequences with... Show more





This page covers geometric sequences and their unique characteristics, emphasizing the multiplicative relationship between consecutive terms rather than additive differences.
Definition: A geometric sequence is a sequence where each term after the first is found by multiplying the previous term by a constant number (multiplier).
Example: The sequence 23, 92, 368, 1472 has a multiplier of 4 between consecutive terms.
Highlight: Unlike arithmetic sequences, geometric sequences use multiplication to progress from term to term.
The page demonstrates various geometric sequences with different multipliers, including fractional multipliers like 0.5, and explains how to verify if a number belongs to a sequence.

This page delves into quadratic sequences, explaining their characteristics and methods for finding terms and patterns.
Definition: A quadratic sequence is one where the second difference between terms is constant.
Example: The sequence 3, 7, 13, 21, 31 shows increasing differences of +4, +6, +8, +10, demonstrating quadratic growth.
Highlight: Finding the nth term in a quadratic sequence involves analyzing both first and second differences.
The page provides detailed steps for working with quadratic sequences, including finding differences between terms and constructing nth term formulas.

This page focuses on advanced techniques for analyzing various types of sequences and solving complex sequence problems.
Example: The sequence 3, 8, 15, 24, 35 demonstrates quadratic growth with a second constant difference.
Highlight: Verifying sequence membership requires substituting values into the sequence formula and checking if the result matches the given term.
The page includes practical examples of determining whether specific numbers belong to given sequences and finding nth terms for more complex patterns.

This page introduces the fundamental concepts of arithmetic sequences, focusing on pattern recognition and term calculation. The content demonstrates how to identify constant differences between consecutive terms and find specific terms in a sequence.
Definition: An arithmetic sequence is a sequence where the difference between consecutive terms remains constant.
Example: The sequence 12, 14, 16, 18, 20, 22 has a constant difference of +2 between terms.
Highlight: Finding terms in an arithmetic sequence involves identifying the pattern and applying it consistently.
Vocabulary: "Ghost term" refers to the term that comes before the first given term in a sequence.
The page includes multiple examples of arithmetic sequences with different common differences, such as +6 and +7, helping students understand pattern recognition.
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
You can download the app from Google Play Store and Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
App Store
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
Scarlett
@scarletta
A comprehensive guide to arithmetic, geometric, and quadratic sequences with step-by-step explanations and practical examples.
• Learn how to identify and work with cómo encontrar el término en una secuencia aritmética through clear examples and patterns
• Master fórmulas para... Show more

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Improve your grades
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This page covers geometric sequences and their unique characteristics, emphasizing the multiplicative relationship between consecutive terms rather than additive differences.
Definition: A geometric sequence is a sequence where each term after the first is found by multiplying the previous term by a constant number (multiplier).
Example: The sequence 23, 92, 368, 1472 has a multiplier of 4 between consecutive terms.
Highlight: Unlike arithmetic sequences, geometric sequences use multiplication to progress from term to term.
The page demonstrates various geometric sequences with different multipliers, including fractional multipliers like 0.5, and explains how to verify if a number belongs to a sequence.

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Improve your grades
Join milions of students
This page delves into quadratic sequences, explaining their characteristics and methods for finding terms and patterns.
Definition: A quadratic sequence is one where the second difference between terms is constant.
Example: The sequence 3, 7, 13, 21, 31 shows increasing differences of +4, +6, +8, +10, demonstrating quadratic growth.
Highlight: Finding the nth term in a quadratic sequence involves analyzing both first and second differences.
The page provides detailed steps for working with quadratic sequences, including finding differences between terms and constructing nth term formulas.

Access to all documents
Improve your grades
Join milions of students
This page focuses on advanced techniques for analyzing various types of sequences and solving complex sequence problems.
Example: The sequence 3, 8, 15, 24, 35 demonstrates quadratic growth with a second constant difference.
Highlight: Verifying sequence membership requires substituting values into the sequence formula and checking if the result matches the given term.
The page includes practical examples of determining whether specific numbers belong to given sequences and finding nth terms for more complex patterns.

Access to all documents
Improve your grades
Join milions of students
This page introduces the fundamental concepts of arithmetic sequences, focusing on pattern recognition and term calculation. The content demonstrates how to identify constant differences between consecutive terms and find specific terms in a sequence.
Definition: An arithmetic sequence is a sequence where the difference between consecutive terms remains constant.
Example: The sequence 12, 14, 16, 18, 20, 22 has a constant difference of +2 between terms.
Highlight: Finding terms in an arithmetic sequence involves identifying the pattern and applying it consistently.
Vocabulary: "Ghost term" refers to the term that comes before the first given term in a sequence.
The page includes multiple examples of arithmetic sequences with different common differences, such as +6 and +7, helping students understand pattern recognition.
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
You can download the app from Google Play Store and Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
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Explore the fundamentals of mathematical sequences, including arithmetic, geometric, Fibonacci, square, and triangular sequences. Learn how to derive the nth term for both linear and quadratic sequences with clear examples and formulas. This summary is essential for mastering sequence concepts in mathematics.
Explore the fundamentals of arithmetic and geometric sequences with clear examples. This summary covers key concepts such as common difference and common ratio, providing essential insights for mastering sequence patterns in mathematics.
Explore the methods to determine the nth term of mathematical sequences, including polynomials and quadratics. This summary covers key concepts such as first and second differences, explicit formulas, and practical examples to enhance your understanding. Ideal for students studying mathematical sequences.
Explore key concepts in fractions, including improper fractions, the multiplicative inverse, and solving equations involving fractions. This summary is designed for Year 7 and Year 8 students, providing clear examples and explanations to enhance your understanding of rational expressions and their applications.
Prepare for your Edexcel GCSE Maths exam with this comprehensive practice paper. This resource includes a variety of questions covering key topics such as percentages, probability, arithmetic sequences, and data interpretation. Ideal for students looking to enhance their problem-solving skills and exam readiness.
Explore the concept of error intervals, including how to determine maximum and minimum values for rounded and truncated numbers. This summary provides clear examples and step-by-step methods for calculating error bounds, essential for mastering numerical accuracy in mathematics.
App Store
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user