📘 Chapter 3 Definitions
Learn and practice Class 9 Mathematics Chapter 3 Definitions on Sets and Functions with complete explanations and examples. This page includes free downloadable notes aligned with the PECTAA 2025 syllabus.
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Chapter 1
Real Numbers
Chapter 2
Logarithms
Chapter 3
Sets and Functions
Chapter 4
Factorization and Algebraic Manipulation
Chapter 5
Linear Equations and Inequalities
Chapter 6
Trigonometry
Chapter 7
Coordinate Geometry
Chapter 8
Logic
Chapter 9
Similar Figures
Chapter 10
Graphs of Functions
Chapter 11
Loci and Construction
Chapter 12
Information Handling
Chapter 13
Probability
Chapter 3 Definitions - Sets and Functions
This chapter covers fundamental concepts of sets and functions, including set operations, types of sets, relations, functions, and their properties.
Chapter 3 provides comprehensive definitions and explanations of sets, functions, and their various types and operations. Understanding these concepts is crucial for building a strong foundation in mathematics.
The chapter covers set theory fundamentals, different methods of describing sets, set operations (union, intersection, difference), relations, functions, and their classifications (injective, surjective, bijective).
Key Topics Covered
- Definition and representation of sets
- Types of sets (empty, singleton, equal, equivalent, subsets)
- Set operations (union, intersection, difference, complement)
- Venn diagrams and their applications
- Relations and their properties
- Functions and their types (injective, surjective, bijective)
- Domain, co-domain, and range of functions
- Linear and quadratic functions
Important Note:
Understanding sets and functions is fundamental to advanced mathematics. These concepts form the basis for topics in algebra, calculus, and discrete mathematics. Pay special attention to function properties and set operations as they are widely used in problem-solving.
Created by Hira Science Academy | Aligned with PECTAA 2025 Syllabus