4.1 Number Systems
4.2 Complex Numbers
4.3 Adding and Subtracting Complex Numbers
4.4 Multiplying Complex Numbers
4.5 Dividing Complex Numbers
4.6 Argand Diagram
4.7 Modulus of a Complex Number
4.8 Equality of a Complex Number
4.9 Quadratic Equations with Complex Numbers
4.10 Complex Numbers and Transformations
Test Yourself 4
