Mathematics GCSE
second differences
What second differences means in Mathematics GCSE, as defined for Pearson Edexcel.
Definition of second differences
Check what you remember
Read the wording for your board, then hide it and explain second differences in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: Pearson Edexcel
These are set out under the sequence when testing for a quadratic, and all of them must be equal.
Topics that use second differences
- Algebra - Sequences (Pearson Edexcel GCSE)
Related terms
- checking a term
- coefficient of n²
- Common ratio
- constant
- Fibonacci-type sequence
- First difference
- geometric progressions
- nth term expression
Using second differences in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
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