Arithmetic And Geometric Progressions
Overview
Some sequences grow by adding the same amount each time; others grow by multiplying by the same factor. The first are arithmetic progressions, the second are geometric progressions, and together they describe an enormous range of patterns, from stacking chairs to compound interest to a bouncing ball.
In this lesson you will learn the formulas for the nth term and the sum of both kinds of progression, and the elegant sum to infinity of a geometric series when the common ratio is small enough. These compact formulas let you jump straight to the 100th term or the total of hundreds of terms without listing them all.
Objectives
- Recognise arithmetic and geometric progressions and understand the difference between them.
- Use the formulas for the nth term and the sum of the first n terms, and the sum to infinity of a convergent geometric progression.
Lesson Note
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Lesson Evaluation
Congratulations on completing the lesson on Arithmetic And Geometric Progressions. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.
You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.
Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.
- For the AP 3, 7, 11, 15, ..., what is the 10th term? A. 35 B. 39 C. 40 D. 43 Answer: B
- For the AP 3, 7, 11, 15, ..., what is the sum of the first 10 terms? A. 195 B. 200 C. 210 D. 220 Answer: C
- For the GP 2, 6, 18, 54, ..., what is the 5th term? A. 108 B. 144 C. 162 D. 216 Answer: C
- For the GP 2, 6, 18, ..., what is the sum of the first 5 terms? A. 162 B. 200 C. 242 D. 486 Answer: C
- What is the sum to infinity of 8, 4, 2, 1, ...? A. 8 B. 12 C. 16 D. infinite Answer: C
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Recommended Books
Practice Mock Questions
Want to practice mock questions on Arithmetic And Geometric Progressions? Download the Green Bridge CBT app to access mock questions and full practice assessments for this topic.
Download The App On Google Playstore
Everything you need to excel in JAMB, WAEC & NECO
