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# Solution - Show that the binary operation * on A = R – { – 1} defined as a*b = a + b + ab for all a, b ∈ A is commutative and associative on A. Also find the identity element of * in A and prove that every element of A is invertible. - Concept of Binary Operations

ConceptConcept of Binary Operations

#### Question

Show that the binary operation * on A = R – { – 1} defined as a*b = a + b + ab for all a, b ∈ A is commutative and associative on A. Also find the identity element of * in A and prove that every element of A is invertible.

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#### Reference Material

Solution for question: Show that the binary operation * on A = R – { – 1} defined as a*b = a + b + ab for all a, b ∈ A is commutative and associative on A. Also find the identity element of * in A and prove that every element of A is invertible. concept: Concept of Binary Operations. For the courses CBSE (Arts), CBSE (Commerce), CBSE (Science)
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