Class 12 Maths

Lecture 3 Booklet Questions (NCERT, Exemplar, Question Bank, Private Publishers) 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 ----------------------------------------- ::CBSE CHAPTER 1 RELATIONS AND FUNCTIONS CLASS 12 Maths IIT JEE MAINS COMPLETE SYLLABUS IN HINDI:: FULL SYLLABUS IS AVAILABLE ONLY ON THE WEBSITE. Website - https://ashishkumarletslearn.com - For any query, you can contact support team on the below link: https://ashishkumarletslearn.com/support List of all Class 12 Maths Chapters on YouTube: https://www.youtube.com/channel/UCb0cTNWAIFGhIHZ0t3C0LPQ/playlists?sort=dd&view=50&shelf_id=28 Follow Facebook Page for Latest Updates: https://www.facebook.com/AshishKumarLetsLearn YouTube Channel: https://www.youtube.com/AshishKumarLetsLearn Subscribe Now: https://www.youtube.com/AshishKumarLetsLearn?sub_confirmation=1 #RelationsAndFunctions #Class12Maths #MathYug

00:00:05 Introduction and How I am going to teach you Class 12 Maths on my Channel 00:06:37 Empty Relations and Universal Relations (Trivial Relations) Lecture 1 (NCERT Exercise 1.1, NCERT Exemplar, Board’s Question Bank) 00:12:27 Question 1 Let R be the relation in the set N given by R = {(a, b) : a = b – 2, b 6}. Choose the correct answer. A. (2, 4) ∈ R B. (3, 8) ∈ R C. (6, 8) ∈ R D. (8, 7) ∈ R (N) 00:15:17 Question 2 Let A= {1, 2, 3,} and define R = {(a, b): a – b = 12}. Show that R is empty relation on Set A. (B) 00:17:47 Question 3 Let A be the set of all students of a boy’s school. Show that the relation R in A given by R = {(a, b) : a is sister of b} is the empty relation and R′ = {(a, b) : the difference between heights of a and b is less than 3 meters} is the universal relation. (N) 00:28:17 Question 4 If A is the set of students of a school then write, which of following relations are Universal, Empty or neither of the two. R1 = {(a, b) : a, b are ages of students and |a – b| 0} R2 = {(a, b) : a, b are weights of students, and |a – b| 0} R3 = {(a, b) : a, b are students studying in same class} (B) 00:40:47 Question 5 Let A = {1, 2, 3,} and define R = {(a, b): a + b 0}. Show that R is a universal relation on set A. (B) ----------------------------------------- Full Syllabus is available on the Website. Website - https://ashishkumarletslearn.com/ - *If you have any query, you can contact our support team on the below link: https://ashishkumarletslearn.com/support #RelationsAndFunctions #Class12Maths #NCERTSolutions