Integrals — Revision Notes
KEAM · Mathematics
Quick revision notes for Integrals — key concepts, formulas, and definitions for KEAM Mathematics preparation.
Revision Notes — Integrals
Key concepts, formulas, and definitions from Integrals for KEAM Mathematics preparation.
Key Topics to Revise
Basic Integration Rules and Standard Forms
- Integration is the inverse of differentiation - if d/dx[F(x)] = f(x), then ∫f(x)dx = F(x) + C
- The constant of integration C is essential in indefinite integrals
- Learn all standard integral formulas by heart as they form the foundation
Integration by Substitution Method
- Used when integrand is in the form f(g(x)) × g'(x) or can be transformed into this form
- Choose substitution u = g(x), then du = g'(x)dx
- Three main types: direct substitution, trigonometric substitution, and algebraic substitution
Integration by Parts
- Used for products of two different types of functions using formula ∫udv = uv - ∫vdu
- ILATE rule for choosing u: Inverse functions, Logarithmic, Algebraic, Trigonometric, Exponential
- Sometimes requires applying integration by parts twice (for functions like e^x sin x)
Integration of Rational Functions by Partial Fractions
- Used when integrand is a proper rational function (degree of numerator < degree of denominator)
- If improper, first divide to get polynomial + proper rational function
- Four cases based on factors of denominator: linear non-repeated, linear repeated, quadratic non-repeated, quadratic repeated
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What topics are covered in Integrals for KEAM?
Integrals is an important chapter in KEAM Mathematics. It covers key concepts and formulas that are frequently tested in the exam. Key topics include: Basic Integration Rules and Standard Forms, Integration by Substitution Method, Integration by Parts, Integration of Rational Functions by Partial Fractions.
How important is Integrals for KEAM?
Integrals is a frequently tested chapter in KEAM Mathematics. Questions from this chapter appear regularly in previous year papers. There are 60 practice questions available for this chapter.
How to prepare Integrals for KEAM?
Start by understanding the core concepts, then solve practice questions. Focus on formulas and their applications. Use revision notes for quick review before the exam.