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If (a*b=\frac{a+b}{1+ab}), where (1+ab\neq 0), is this operation commutative?

Answer and explanation

Correct answer: Yes because changing order in numerator and denominator does not change the value

Step 1: (b*a=\frac{b+a}{1+ba}). Step 2: Since (b+a=a+b) and (ba=ab), the value is the same. Step 3: For commutativity, reverse the whole rule and compare.

Related tags

CommutativeFraction OperationBinary OperationsRelations And FunctionsMathematicsClass 12 Mcq

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