NCERT NCERT Book PDF Class 11 Maths Chapter 2 Relations and Functions

Download the Class 11 Maths Chapter 2 Relations and Functions NCERT Book PDF, the official 2026-27 NCERT textbook chapter. It turns the idea of a set into ordered pairs, relations and functions, and this language underpins nearly every later topic tested in the Boards, JEE Main, JEE Advanced and CUET.

• Official NCERT 2026-27 chapter, clean and print-ready.
• Covers Cartesian products, relations, functions, domain and range.
• Read it alongside the solved exercises and the revision notes linked below.

This Class 11 Maths Chapter 2 Relations and Functions NCERT Book PDF is the official 2026-27 NCERT text, checked page by page against the latest edition.

What Class 11 Maths Chapter 2 Relations and Functions Covers

The chapter starts with ordered pairs and the Cartesian product of two sets, then defines a relation as a subset of that product and a function as a special relation. The official NCERT sections are listed below.

Key Concepts You Will Study

Students should read the chapter with a pen and note each definition as it appears. The ideas are short but return in every later chapter on functions and calculus.

• Ordered pairs and the Cartesian product A × B of two sets.
• A relation as a subset of A × B, with its domain and range.
• The definition of a function and how to test if a relation is one.
• Standard real functions: identity, constant, polynomial, modulus and greatest integer.
• Algebra of real functions: sum, difference, product and quotient.

Why Download the NCERT Book PDF for This Chapter

The NCERT textbook is the single most important source for the CBSE exam, and most JEE and CUET questions from this chapter are built directly on its definitions and examples.

• Every Board question on domain, range and functions comes from this text or its exercises.
• The worked examples show how to find the domain and range cleanly.
• Reading offline from the PDF avoids missing any small rule or graph.

How to Use the NCERT Book PDF for Relations and Functions

Read the chapter once fully, then work through it a second time with the exercises open. A short, ordered plan keeps the definitions from blurring together.

• Read each section, then write its definition in your own words in a single line.
• Sketch the graph of each standard function before you memorise its domain and range.
• Solve the in-text examples before looking at the given solution.
• Attempt the back exercises, then check them against the NCERT Solutions below.

Other Class 11 Maths Relations and Functions Resources

Pair the textbook PDF with the solved answers, revision notes and formula sheet for the same chapter.

FAQs on Class 11 Maths Chapter 2 NCERT Book PDF