Relation and function ISC Class 12 Maths ML Aggarwal Solutions Ch-1. Step by step Solutions of ML Aggarwal ISC Class-12 Mathematics solutions of all exercise with Chapter Test Questions. Visit official Website CISCE for detail information about ISC Board Class-12 Mathematics.
Relation and function ISC Class 12 Maths ML Aggarwal Solutions
Board | ISC |
Class | 12 |
Subject | Mathematics |
Chapter-1 | Relation and function |
Session | 2024-25 |
Topics | Solutions of ML Aggarwal |
Relation
The concept of relation is used in relating two objects or quantities with each other. Suppose two sets are considered. The relationship between them will be established if there is a connection between the elements of two or more non-empty sets
Types of Relations
Empty Relation: If no element of A is related to any element of A, i.e. R = φ ⊂ A × A, then the relation R in a set A is called empty relation.
Universal Relation: If each element of A is related to every element of A, i.e. R = A × A, then the relation R in set A is said to be universal relation
Reflexive- if (a, a) ∈ R, for every a ∈ A,
Symmetric- if (a1, a2) ∈ R implies that (a2, a1) ∈ R , for all a1, a2∈ A,
Transitive- if (a1, a2) ∈ R and (a2, a3) ∈ R implies that (a1, a3) ∈ R for all a1, a2, a3 ∈ A.
Equivalence Relation- A relation R in a set A is an equivalence relation if R is reflexive, symmetric and transitive
Functions
A function is a relationship which explains that there should be only one output for each input. It is a special kind of relation(a set of ordered pairs) which obeys a rule, i.e. every y-value should be connected to only one y-value
Types of Functions
One to one Function: A function f : X → Y is defined to be one-one (or injective), if the images of distinct elements of X under f are distinct, i.e., for every x1 , x2 ∈ X, f(x1 ) = f(x2 ) implies x1 = x2 . Otherwise, f is called many-one
Onto Function: A function f: X → Y is said to be onto (or surjective), if every element of Y is the image of some element of X under f, i.e., for every y ∈ Y, there exists an element x in X such that f(x) = y
One-one and Onto Function: A function f: X → Y is said to be one-one and onto (or bijective), if f is both one-one and onto
Binary Operations
A binary operation ∗ on a set A is a function ∗ : A × A → A. We denote ∗ (a, b) by a ∗ b.
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Relation and function ISC Class 12 Maths ML Aggarwal Solutions Ch-1
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ISC Class 12 Maths ML Aggarwal Solutions Ch-1
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Relation and function ISC Class 12 Maths Ch-1
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Class 12 Maths ML Aggarwal Solutions Ch-1
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Relation and function ML Aggarwal Solutions Ch-1
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Relation and function ISC Class 12 Maths ML Aggarwal
Ch-Test
ISC Class 12 Maths ML Aggarwal Solutions Ch-1
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