Topic study hub
Functions
Understand the concept of functions, including their domain and range, and use function notation such as f(x) = 3x - 5, g(x) = 5/2, and h(x) = 2x + 3. Learn to determine inverse functions and create composite functions, for example, if f(x) = 3x + 5 and g(x) = x + 2, find fg(x) and gf(x) = g(f(x)). Provide answers as fractions in simplest form. Note that finding the domains and ranges of composite functions is not required. This topic may also involve mapping diagrams.
1
Objectives
10
Flashcards
7
Questions
46 min
Study time
CambridgeIGCSEMathematicsExtended Algebra and graphs
Choose a revision tool
Start revising Functions
Syllabus checklist
What you need to know
1 objective pages available
Functions outcomes1 objectives
- Understand the concept of functions, including their domain and range, and use function notation such as f(x) = 3x - 5, g(x) = 5/2, and h(x) = 2x + 3. Learn to determine inverse functions and create composite functions, for example, if f(x) = 3x + 5 and g(x) = x + 2, find fg(x) and gf(x) = g(f(x)). Provide answers as fractions in simplest form. Note that finding the domains and ranges of composite functions is not required. This topic may also involve mapping diagrams.
Key terms
CalculateDetermineShowWrite
Exam tips
No exam tips are published for this topic yet.
Common mistakes
No common mistakes are published for this topic yet.
Practice preview
Continue by objective
Objectives are grouped by subtopic so students can jump straight to the exact skill they want to revise.
Related topics