Introduction to functions
Review function notation, inputs, outputs, graphs, and how to interpret common Grade 12 function questions.
View related pageGrade 12 Mathematics
Grade 12 Mathematics video lessons for South African learners
dorKk gives Grade 12 learners structured Mathematics video lessons for revision, homework help, and exam preparation.
Learners can work through topic explanations in English and Afrikaans, then move into related lessons and pricing options when they are ready to study in the app.
What learners use it for
Use these paths to match support to the learner's grade, subject, language, and next study goal.
Functions, algebra, calculus, finance, probability, and geometry revision
Matric exam preparation and topic catch-up
Parent-supported homework help at home
Suggested study topics
Start with a focused topic, then move into related revision, pricing, app access, or school support.
Calculus first principles
Build the link between gradient, limits, derivatives, and exam-style differentiation questions.
Trigonometry identities
Work through the identities learners need before solving multi-step trigonometry problems.
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