Sequences and Series — Formula Sheet
CBSE · Class 11 · Applied Mathematics
5 formulas from Sequences and Series (CBSE Class 11 Applied Mathematics) on one page, grouped by topic. Covers Basic Concepts - Sequences and Series.
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Formulas and Key Relations
Arithmetic Progression (AP)
Common difference d = aₙ₊₁ - aₙ (constant for all n)
Geometric Progression (GP)
Common ratio r = aₙ₊₁/aₙ (constant for all n, r ≠ 0)
Three numbers a, b, c are in GP if b² = ac
Key relations
The arithmetic mean of two numbers a and b is A = (a+b)/2.
The geometric mean of two positive numbers a and b is G = √(ab).
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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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