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Let * be the binary operation defined on Q. Find which of the following binary operations are commutative a * b = a – b ∀ a, b ∈ Q - Mathematics

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प्रश्न

Let * be the binary operation defined on Q. Find which of the following binary operations are commutative

a * b = a – b ∀ a, b ∈ Q

योग
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उत्तर

Given that * is a binary operation defined on Q.

a * b = a – b, ∀ a, b ∈ Q and b * a = b – a

So, a * b ≠ b * a

Thus, * is not commutative.

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अध्याय 1: Relations And Functions - Exercise [पृष्ठ १३]

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एनसीईआरटी एक्झांप्लर Mathematics [English] Class 12
अध्याय 1 Relations And Functions
Exercise | Q 26. (i) | पृष्ठ १३

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