This exam tips covers Top Tips within Quadratic Sequences for GCSE Mathematics. Revise Quadratic Sequences in Algebra for GCSE Mathematics with 12 exam-style questions and 22 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 7 of 7 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.
Topic position
Section 7 of 7
Practice
12 questions
Recall
22 flashcards
Top Tips
- Recognition: If first differences are not constant but second differences are, it's quadratic
- Always check: Substitute values back into your formula to verify it works
- Common mistake: Forgetting that a = ½ × (second difference), not the full second difference
- Pattern tip: Quadratic sequences often involve square numbers, triangular numbers, or growth patterns
- Real-world: Look for quadratic sequences in physics (distance = ½at²), economics (compound interest), and geometry (areas)
- Negative 'a': When a < 0, the sequence eventually decreases (like throwing a ball up)