 # Maths Revision Notes for Class 12 Chapter 1 Relations and Functions.

Maths is considered as one of the more challenging subjects for students of all classes. Class 12 students especially face a much tougher time in preparing for the exams, since the level of difficulty of the chapters and topics introduced keeps getting harder. Chapter 1 introduces students to the concept of Relations and Functions for class 12. Relations can simply be defined as a natural association occurring between two or more things. While functions are defined as the dependence of one quantity with the other. The in-depth definition of these different concepts is useful as it helps students learn and differentiate one topic over the other while understanding important concepts easily.

## Frequently asked Questions on CBSE Class 12 Maths Notes Chapter 1: Relations and Functions

### What is a ‘Relation’ in mathematical terms?

In Mathematics, the relation is the relationship between two or more set of values.

### What is a ‘Function’ in mathematical terms?

In Mathematics, an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).

### What are the uses of ‘Functions’?

Some of the important types of functions are: 1. Many to one function.2. One to one function.3. Onto function.4. One and onto function.5. Constant function.6. Identity function.