1. Chapter 1 Class 12 Relation and Functions (Term 1)
  2. Serial order wise
  3. Ex 1.4

Ex 1.4, 13 (MCQ) - Chapter 1 Class 12 Relation and Functions (Term 1)

Last updated at Aug. 11, 2021 by

Ex 1.4, 13 - Consider a * b = a3 + b3. Choose (A) Is * both - Whether binary commutative/associative or not

Ex 1.4, 13 - Chapter 1 Class 12 Relation and Functions - Part 2

  1. Chapter 1 Class 12 Relation and Functions (Term 1)
  2. Serial order wise

    3. Ex 1.4

    Examples →

Transcript

Ex 1.4, 13 Consider a binary operation * on N defined as a * b = a3 + b3. Choose the correct answer. (A) Is * both associative and commutative? (B) Is * commutative but not associative? (C) Is * associative but not commutative? (D) Is * neither commutative nor associative? Check commutative * is commutative if a * b = b * a Since a * b = b * a, ∀ a, b ∈ N * is commutative Check associative * is associative if (a * b) * c = a * (b * c) Since (a * b) * c ≠ a * (b * c), ∀ a, b, c ∈ N * is not associative Hence, B is the correct answer

Chapter 1 Class 12 Relation and Functions (Term 1)
Serial order wise

About the Author

Davneet Singh's photo - Teacher, Engineer, Marketer
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.