Relations and Functions · Class 11 Mathematics · Chapter 2
📐 Relations and Functions
CBSE Class 11 Science · Mathematics · Chapter 1
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📖Notes Deck
Full lecture deck with teaching paragraphs, misconception red-boxes, and glossary. Read this first.
Download PDF →📝Quick Drill
15 pattern-tagged MCQs with per-Q time budget. Drill under a 20-min timer.
Download PDF →📄Exam Paper
Full exam-pattern paper with sections. Sit it closed-book before checking the marking scheme.
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Download PDF →⚡Cheat Sheet
1-page exam-day card: key points, top question patterns, 90-minute revision flow.
Download PDF →👨👩👧For Parents
1-page plain-language parent guide: what's being learned + questions to ask your child.
Download PDF →Top question patterns · CBSE annual / SQP aggregate
| 90% | List A × B or write a relation R in roster form — Row-major listing; check (x,y) lies in correct sets. | 2 MARKS |
| 85% | Find domain and range of a real function — Domain = allowed inputs; range = actual outputs. Check √ ≥ 0 and denominator ≠ 0. | 3 MARKS |
| 70% | Show f is one-one / onto / bijective — Definitions first, then symbolic proof or counter-example. | 3 MARKS |
| 60% | Composition or algebra of functions at a point — Inner function first, then outer; remember composition is non-commutative. | 2 MARKS |
| 55% | Sketch a standard real function + state domain/range — Memorise four shapes; labelled axes; correct open/filled dots for [x]. | 4 MARKS |
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