# NCERT Solutions for Class 12 Maths Chapter 1 Exercise 1.2

NCERT Solutions for Class 12 Maths Chapter 1 Exercise 1.2 Relations and Functions in Hindi Medium as well as English Medium for CBSE Board, UP Board – intermediate (Senior Secondary), Bihar Board, Uttarakhand board, Madhya Pradesh (MP Board) and the other state boards also which are following NCERT Books in Secondary and Senior Secondary Education.

## NCERT Solutions for Class 12 Maths Chapter 1 Exercise 1.2

### Class 12 Maths Chapter 1 Exercise 1.2 Sols in English

NCERT Solutions for Class 12 Maths Chapter 1 Exercise 1.2 Relations and Functions in English Medium for CBSE, Madhya Pradesh Board, UP Board, Bihar Board, Uttarakhand and all other board using NCERT Books. Click here to go back to Class 12 Maths Chapter 1 all exercises or go for Hindi Medium Solutions, if you want to see the solutions in Hindi.

### Class 12 Maths Chapter 1 Exercise 1.2 Sols in Hindi

NCERT Solutions for Class 12 Maths Chapter 1 Exercise 1.2 Relations and Functions in Hindi Medium for all board using NCERT books in Hindi. Click here to go back to Class 12 Maths Chapter 1 all exercises or go for English Medium solutions, if you want to change the medium of solutions as English.

#### About 12 Maths Exercise 1.2

In Exercise 1.2, the questions are based on concept of one – one, onto, injective, surjective, bijective, invertible function, etc. If the function is invertible, then we have to find inverse also. If for each elements in domain, there is one and only one element in co-domain, then it is called one-one. Similarly, if for each element in range, there is one and only one element in domain, then it is onto. When a function is one – one as well as onto, it is said to be invertible function.

##### More to Know
• One-One Function :f : A → B is said to be one-one if distinct elements in A have distinct images in B. i.e. ∀ x1, x2 ∈ A such that x1 ≠ x2 ⇨f (x1) ≠ f(x2).
• Onto function (surjective): A function f :A→B is said to be onto iff Rf = B i.e. ∀ b ∈ B, there exists a ∈ A such that f (a) = b
• Bijective Function : A function which is both injective and surjective is called bijective function.