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Determine whether or not each of the definition of given below gives a binary operation. In the event that * is not a binary operation, give justification for this. (i) On Z+, define * by a * b = a − b (ii) On Z+, define * by a * b = ab (iii) On R, define * by a * b = ab2 (iv) On Z+, define * by a * b = |a − b| (v) On Z+, define * by a * b = a |
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Answer» Determine
(i) On
(ii) On
(iii) On
(iv) On
(v) On
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