Relations and Functions — Revision Notes
CBSE · Class 11 · Mathematics
Relations and Functions revision notes for CBSE Class 11 Mathematics: 1 topics in quick points. Includes Counting Relations and Function Tests.
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Key Topics to Revise
6. Counting Relations and Function Tests
- If n(A)=p and n(B)=q, then n(A × B)=pq.
- The number of relations from A to B is 2^(pq).
- To test whether a relation is a function, check whether every first element has exactly one image.
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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