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If \(f(x)=x^2\) and \(g(x)=x^3\), what is the value of the product function \((fg)(x)\)?

Answer and explanation

Correct answer: \(x^5\)

By definition of the product of two functions, \((fg)(x)=f(x)g(x)\). Hence, \((fg)(x)=x^2\cdot x^3=x^{2+3}=x^5\). Option B, \(x^6\), would result from the composition \(f(g(x))\), not from multiplication. Exam tip: distinguish \((fg)(x)\) from \(f(g(x))\).

Related tags

AlgebraReal FunctionsProduct Of FunctionsExponentsAlgebra Of Real FunctionsRelations And FunctionsMathematicsClass 11 Mcq

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