![Ex 1.4, 9 - Chapter 1 Class 12 Relation and Functions - Part 2](https://d1avenlh0i1xmr.cloudfront.net/b2380883-0eab-4e58-98f2-39adaa098815/slide35.jpg)
Binary Operations
Binary Operations
Last updated at April 16, 2024 by Teachoo
Ex 1.4, 9 Let * be a binary operation on the set Q of rational numbers as follows. Find which are associative and which are commutative : • a * b = a − b Check commutative * is commutative if a * b = b * a Since a * b ≠ b * a * is not commutative Check associative * is associative if (a * b) * c = a * (b * c) Since (a * b) * c ≠ a * (b * c) * is not an associative binary operation