WJEC Mathematics for AS Level - Pure

9 Introduction Amathematical proof is amathematical argument that convinces others that a mathematical statement is true. In this topic, you will be using a number of techniques to prove or disprove mathematical statements. This topic is unusual in mathematics as it depends on precise use of English as well as mathematical techniques. This topic covers the following: 1.1 Real and imaginary numbers 1.2 Rational and irrational numbers 1.3 Proof by exhaustion 1.4 Disproof by counter-example 1.5 Proof by deduction