OCR AS Maths: Pure

Revision Notes

1.1.1 Language of Proof

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Language of Proof

What is proof?

  • Proof is a series of logical steps which show whether a result is true or not for a set of specified numbers
    • e.g. All integers, all even numbers etc

Notation in proof

Language of Proof Notes Diagram 1, Edexcel A Level Maths: Pure revision notes 

  • LHS and RHS are standard abbreviations for left-hand side and right-hand side
  • Integers are used frequently in the language of proof
    • The set of integers is denoted by ℤ

Techniques for proof

Language of Proof Notes Diagram 2, Edexcel A Level Maths: Pure revision notes

Worked example

Language of Proof Example, Edexcel A Level Maths: Pure revision notes

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Paul

Author: Paul

Paul has taught mathematics for 20 years and has been an examiner for Edexcel for over a decade. GCSE, A level, pure, mechanics, statistics, discrete – if it’s in a Maths exam, Paul will know about it. Paul is a passionate fan of clear and colourful notes with fascinating diagrams – one of the many reasons he is excited to be a member of the SME team.