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If f(x)=x^2+1 and g(x)=x-2, what is the value of (fg)(3)?

Answer and explanation

Correct answer: 10

The product of two functions is defined as (fg)(x)=f(x)g(x). Thus, f(3)=3^2+1=10 and g(3)=3-2=1, so (fg)(3)=10×1=10. The value 12 would result from adding the two function values, not multiplying them. Exam tip: For (fg)(a), evaluate both f(a) and g(a) first, then multiply.

Related tags

Relations And FunctionsAlgebra Of FunctionsFunction ProductFunction EvaluationAlgebra Of Real FunctionsMathematicsClass 11 Mcq

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