MA13-07 Maths Watch
Finding the nth Term of an Exponential Sequence
Subscribe on YouTubeLike this lesson on YouTube
In this lesson
In this video you'll learn about nth term of an exponential sequence for GCSE Maths, with worked examples and the mistakes examiners report. By the end you'll be able to find and use an expression for the nth term of an exponential (geometric) sequence in r^n form, including simple sequences built by combining an exponential part with a linear part.
What it covers
- 1:19 Diagnosis: differences never settle
- 4:02 Building rⁿ
- 7:09 Using the formula
- 8:58 Worked example: combination: 2ⁿ + 1
- 12:07 Exam technique
- 14:42 What's next
Key words
For: Cambridge IGCSE 0580
On the specification
| Board | Spec | Statement |
|---|---|---|
| Cambridge IGCSE 0580 | E2.7 | Continue a given number sequence or pattern. |
For teachers
This GCSE Maths lesson teaches finding the nth term of an exponential sequence. By the end, students should be able to find and use an expression for the nth term of an exponential (geometric) sequence in r^n form, including simple sequences built by combining an exponential part with a linear part. It works through two worked examples and the mistakes examiners report.