Example 36 - Chapter 1 Class 12 Relation and Functions (Term 1)

Last updated at Dec. 8, 2016 by Teachoo

Example 36 - Show addition, multiplication are associative on R - Whether binary commutative/associative or not

Example 36 - Chapter 1 Class 12 Relation and Functions - Part 2

Example 36 - Chapter 1 Class 12 Relation and Functions - Part 3

Example 36 - Chapter 1 Class 12 Relation and Functions - Part 4

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Transcript

Example 36 Show that addition and multiplication are associative binary operation on R. But subtraction is not associative on R. Division is not associative on R∗. Addition * is associative if (a * b) * c = a * (b * c) Since (a * b) * c = a * (b * c) ∀ a, b, c ∈ R + is an associative binary operation Multiplication * is associative if (a * b) * c = a * (b * c) Since (a * b) * c = a * (b * c) ∀ a, b, c ∈ R × is an associative binary operation Subtraction * is associative if (a * b) * c = a * (b * c) Since (a * b) * c ≠ a * (b * c) ∀ a, b, c ∈ R – is not an associative binary operation Division * is associative if (a * b) * c = a * (b * c) Since (a * b) * c ≠ a * (b * c) ÷ is not an associative binary operation

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Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.

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