Class 12 Maths · Chapter 1 · CBSE / NCERT
Relations and Functions
Relations and functions, made exact. You’ll learn reflexive, symmetric and transitive relations, equivalence classes, one-one and onto functions, composition and inverses.
14 short lessons · about 58 minutes in all
What you’ll learn
- 1A relation is a chosen set of pairs4 min
- 2The two extremes: no pairs and all pairs4 min
- 3Reflexive: everyone related to themselves4 min
- 4Symmetric: every pair works both ways4 min
- 5Transitive: chains carry through4 min
- 6Equivalence: all three checks pass4 min
- 7Equivalence classes: sorting into groups4 min
- 8Function, domain, codomain and range4 min
- 9One-one: different inputs, different outputs5 min
- 10Onto: every output gets used4 min
- 11Bijective, and why finite sets are special4 min
- 12Composition: one function after another4 min
- 13Undoing a function: the inverse5 min
- 14Counting one-one functions and relations4 min
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A relation is a chosen set of pairs · about 4 minutes
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More Class 12 Maths
The other 12 chapters.
CH 2Inverse Trigonometric Functions14 lessonsCH 3Matrices14 lessonsCH 4Determinants14 lessonsCH 5Continuity and Differentiability14 lessonsCH 6Application of Derivatives12 lessonsCH 7Integrals18 lessonsCH 8Application of Integrals10 lessonsCH 9Differential Equations14 lessonsCH 10Vector Algebra14 lessonsCH 11Three Dimensional Geometry14 lessonsCH 12Linear Programming12 lessonsCH 13Probability14 lessons
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