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 all boards using NCERT Books as a course books, updated for session 2020-2021.

Solutions are applicable 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
Subject:Maths
Chapter 1:Exercise 1.2

12th Maths Exercise 1.2 Solutions

NCERT Solutions for Class 12 Maths Chapter 1 Exercise 1.2 Relations and Functions in English & Hindi Medium for CBSE, Madhya Pradesh Board, UP Board, Bihar Board, Uttarakhand and all other board using NCERT Books 2020-21. Download Offline Apps based on latest CBSE Syllabus for new session. Join the discussion forum to solve your doubts related to NIOS or CBSE Board.

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 element 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.

Important Terms related to Exercise 1.2

1. 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).
2. 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
3. Bijective Function : A function which is both injective and surjective is called bijective function.

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