E2.13 Functions
- Syllabus
- 0580–2028–2029
- Topic
- E2.13
- Level
- Extended
E2.13.1 Understand functions, domain and range and use function notation.
- Understand functions, domain and range and use function notation.
E2.13.2 Understand and find inverse functions f –1(x).
- Understand and find inverse functions f –1(x).
E2.13.3 Form composite functions as defined by gf(x) = g(f(x))
- Form composite functions as defined by gf(x) = g(f(x)). Examples include: • f (x) = 3x – 5 • g(x) = 3(x + 4) • h(x) = 2x2 + 3. e.g. f(x) = 3 x + 2 and g(x) = (3x + 5)2. Find fg(x). Give your answer as a fraction in its simplest form. Candidates are not expected to find the domains and ranges of composite functions. This topic may include mapping diagrams.
Objective notes
3 learning objectivesConceptIGCSE Mathematics Extended