Curriculum
Course: General Mathematics — Second Secondary
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Curriculum

General Mathematics — Second Secondary

Unit 1: Real Functions and Curve Sketching

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Unit 2: Exponents, Logarithms and Applications

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Unit 3: Limits

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Unit 4: Trigonometry

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Text lesson

Solving Equations and Inequalities

General Mathematics — Second Secondary

Solving Equations and Inequalities

Lesson summary

Lesson summary

  • |x| = a gives x = a or x = −a when a > 0.
  • |x| < a means −a < x < a, and |x| > a means x > a or x < −a.
  • A quadratic inequality is solved by factorising and then using a sign table.
  • Always check the solution, especially when using two cases.
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