4. Inequalities

4.01 Introducing Inequalities

4.02a Solving a Linear Inequality Problem

4.02b Solving Linear Inequalities

4.03a Introducing solving Quadratic Inequalities

4.03b Solving a Quadratic Inequality by Factorising

4.03c Solving a Quadratic Inequality by using the Quadratic Formula

4.03d Solving a Quadratic Inequality when a is negative

4.03e Solving a Tricky Quadratic Inequality

4.04 Re-introducing the Discriminant

4.05a An Example of a Discriminant Quadratic Inequality

4.05b Another Example of a Discriminant Quadratic Inequality

4.05c A Tricky Example of a Discriminant Quadratic Inequality

4.05d A Trickier Example of a Discriminant Quadratic Inequality