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Spotting a quadratic sequence

Spotting a quadratic sequence

Difference table for the sequence 7, 15, 27, 43 showing first differences +8, +12, +16 and constant second differences +4, +4

A sequence is a list of numbers following a rule, and the position of each term is called the term number nnn. The nth term is a formula that gives the value of a term for any chosen position.

The Nth Term of a Quadratic Sequence Lesson

  1. GCSE
  2. /Maths
  3. /The Nth Term of a Quadratic Sequence

Step-by-step lessons covering Edexcel GCSE Maths The Nth Term of a Quadratic Sequence for Foundation and Higher tier. Each lesson works through exam-style questions in Paper 1, Paper 2 and Paper 3 format. Build fluency with number, ratio and algebra first, since geometry, probability and statistics topics rely on them, and leave extra time nearer the exam for Higher-tier problem-solving and multi-step reasoning questions.

Lessons

Quadratic Simultaneous EquationsTransforming Graphs y=f(x)ProofCompleting the SquareThe Nth Term of a Quadratic SequenceQuadratic InequalitiesProof of the Circle TheoremsPerpendicular Lines and the equation of a tangentVectors Proof QuestionsProbability Equation Questions