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Edexcel International AS Maths: Pure 2

Revision Notes

Home / International AS / Maths: Pure 2 / Edexcel / Revision Notes / 4. Sequences & Series / 4.3 Geometric Sequences & Series / 4.3.1 Geometric Sequences

4.3.1 Geometric Sequences

Name: Geometric Sequences (4.3.1) | Edexcel International AS Maths: Pure 2 Revision Notes 2019 Membership
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Geometric Sequences

What do I need to know about geometric sequences?

In a geometric sequence, there is a common ratio between consecutive terms in the sequence

Geom Seq Illustr, A Level & AS Level Pure Maths Revision Notes

You need to know the n^th term formula for a geometric sequence

u_{n} = a r^{n - 1}

- a is the first term
- r is the common ratio

Exam Tip

If you know two terms in a geometric sequence you can find a and d using simultaneous equations. Geom Seq Simult, A Level & AS Level Pure Maths Revision Notes

Worked Example

Geom Seq Example, A Level & AS Level Pure Maths Revision Notes

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Roger's teaching experience stretches all the way back to 1992, and in that time he has taught students at all levels between Year 7 and university undergraduate. Having conducted and published postgraduate research into the mathematical theory behind quantum computing, he is more than confident in dealing with mathematics at any level the exam boards might throw at you.

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Edexcel International AS Maths: Pure 2

Revision Notes

4.3.1 Geometric Sequences

What do I need to know about geometric sequences?

Author: Roger

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