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Chapter 15 of 27
Revision Notes

Application Of IntegralsRevision Notes

KEAM · Mathematics

Quick revision notes for Application Of Integrals — key concepts, formulas, and definitions for KEAM Mathematics preparation.

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A comparison showing how elementary geometry can calculate areas of regular shapes (rectangle, triangle, circle) using fixed formulae, but is inadequate for irregular, curved shapes, which require the
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Revision Notes — Application Of Integrals

Key concepts, formulas, and definitions from Application Of Integrals for KEAM Mathematics preparation.

Key Topics to Revise

1

Area Under Simple Curves

  • Area under a curve y = f(x) from x = a to x = b is given by ∫[a to b] f(x) dx
  • Area under a curve x = f(y) from y = c to y = d is given by ∫[c to d] f(y) dy
  • When function goes below x-axis, take absolute value to get positive area
2

Area Between Two Curves

  • Area between y = f(x) and y = g(x) is ∫[a to b] |f(x) - g(x)| dx
  • Always subtract lower function from upper function
  • Find intersection points to determine correct limits
3

Special Cases and Important Results

  • Area enclosed by parabola y² = 4ax and x² = 4by is (16ab)/3
  • Area between parabola y² = 4ax and line y = mx is (8a²)/(3m³)
  • Area of ellipse x²/a² + y²/b² = 1 is πab
4

Problem-Solving Strategies

  • Step 1: Sketch the curves to visualize the region
  • Step 2: Find intersection points by solving equations simultaneously
  • Step 3: Determine which function is upper/lower in each interval

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Key Concepts

For a continuous function f(x) ≥When two curves y = f(x)Sometimes it's easier to integrateSeveral important standard results help

Frequently Asked Questions

What topics are covered in Application Of Integrals for KEAM?
Application Of Integrals is an important chapter in KEAM Mathematics. It covers key concepts and formulas that are frequently tested in the exam. Key topics include: Area Under Simple Curves, Area Between Two Curves, Special Cases and Important Results, Problem-Solving Strategies.
How important is Application Of Integrals for KEAM?
Application Of Integrals is a frequently tested chapter in KEAM Mathematics. Questions from this chapter appear regularly in previous year papers. There are 189 practice questions available for this chapter.
How to prepare Application Of 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.

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