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If \(f(x)=5\) and \(g(x)=x^2\), what is \((f-g)(x)\)?

Answer and explanation

Correct answer: \(5-x^2\)

By the definition of the difference of two functions, \((f-g)(x)=f(x)-g(x)\). Hence, \((f-g)(x)=5-x^2\). Option B reverses the order of subtraction, while options C and D represent multiplication and addition, respectively. In an exam, remember to subtract the second function from the first in \((f-g)\).

Related tags

AlgebraReal FunctionsFunction OperationsSubtraction Of FunctionsRelations And FunctionsAlgebra Of Real FunctionsMathematicsClass 11 Mcq

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