In this PowerPoint, we present the concept of the modulus function. We explore it both from algebraic and graphic perspectives, trying to establish relevant connections between the two. We then study equations and inequalities involving modulus and show how to proceed in such cases. We also include the algebraic technique of “squaring both sides” and alert for the situations in which this method can lead to wrong or incomplete answers.
Additionally, we explore different examples of worked exam-style questions, where all steps are clear and detailed.
Hopefully, this resource can help students in their preparation for examinations and can also be used as a complementary teaching tool, when delivering these topics.
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