One-One, Many-one, Onto, Into Functions Class 12 Maths Chapter 1

Relations and Functions Lecture 3 (Part 1)

Sunday, May 02, 2021

Agam Sir

Video Format

Topics/Questions discussed in this video:

00:00:01 Introduction to this part of lecture

00:01:32 One – One or Injective and Many – One

00:22:23 Question 3 Let A = {1, 2, 3}, B = {4, 5, 6, 7} and let f = {(1, 4), (2, 5), (3, 6)} be a function from A to B. Show that f is one-one.

00:24:50 Onto (Surjective) and Into

Agam Sir

Agam Sir


Ashish Kumar a.k.a Agam Sir has vast experience of 12+ years of teaching Mathematics and Physics. He has skills (academic and vocational) that go with working alongside people, especially young people, their parent(s) and the institutes that works with him. He always seek to be an agent of positive change and progression, a mentor/ trainer/ educator for learners/students, seeing that their needs are ideally met.