Mathematics GCSE
geometric progressions
What geometric progressions means in Mathematics GCSE, as defined for Pearson Edexcel.
Definition of geometric progressions
Check what you remember
Read the wording for your board, then hide it and explain geometric progressions in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: Pearson Edexcel
Sequences with a constant ratio, such as 16, 8, 4, 2 with ratio ½, and at Higher tier with surd ratios such as 1, √2, 2, 2√2, 4 with ratio √2 and rule (√2)ⁿ⁻¹.
Topics that use geometric progressions
- Algebra - Sequences (Pearson Edexcel GCSE)
Related terms
- checking a term
- coefficient of n²
- Common ratio
- constant
- Fibonacci-type sequence
- First difference
- nth term expression
- position-to-term rule
Using geometric progressions in the exam
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