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If \\(f(x)=x^2\\), what is the value of \\((f+f)(x)\\)?

Answer and explanation

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

The sum of two functions is found pointwise: \\((f+f)(x)=f(x)+f(x)=x^2+x^2=2x^2\\). Hence, option A is correct. Option B results from incorrectly multiplying the terms, but the operation here is addition. Exam tip: when adding like terms, add their coefficients and keep the common power unchanged.

Related tags

AlgebraReal FunctionsFunction AdditionLike TermsAlgebra Of Real FunctionsRelations And FunctionsMathematicsClass 11 Mcq

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