Question: 3 . 2 Define a new 'multiplication' operation on Z , by setting a o . b = - a b . Is ( Z

3.2 Define a new 'multiplication' operation on Z, by setting ao.b=-ab. Is (Z,,+o.
a ring according to Definition 3.1?(Prove it is, or explain why it is not.)
3 . 2 Define a new 'multiplication' operation on

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