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Class 12MathematicsRelations and FunctionsFunctionsHard
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If (f(x)=2x+3) and ((f\circ f)(x)=17), what is the value of (x)?

Answer and explanation

Correct answer: (2)

Step 1: ((f\circ f)(x)=f(2x+3)=2(2x+3)+3=4x+9). Step 2: (4x+9=17), so (4x=8). Step 3: Therefore, (x=2).

Related tags

CompositionSelf-CompositionLinear-FunctionFunctionsRelations And FunctionsMathematicsClass 12 Mcq
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