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If \(f(x)=4x+11\) and \(g(x)=x-6\), what is the value of \((f+g)(x)\)?

Answer and explanation

Correct answer: \(5x+5\)

The sum of functions is defined as \((f+g)(x)=f(x)+g(x)\). Hence, \((f+g)(x)=(4x+11)+(x-6)=5x+5\), so option A is correct. Option B is obtained from \(f(x)-g(x)\), whereas option D is the product \(f(x)g(x)\). Exam tip: while adding functions, combine like terms and constants separately.

Related tags

Relations And FunctionsReal FunctionsFunction AdditionLinear FunctionsAlgebraAlgebra Of Real FunctionsMathematicsClass 11 Mcq

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