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Subjects
Class 12MathematicsRelations and FunctionsFunctionsMedium
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If (f(x)=x^2+2x), what is (f(x+1)-f(x))?

Answer and explanation

Correct answer: (2x+3)

Step 1: Write (f(x+1)=(x+1)^2+2(x+1)). Step 2: Simplifying gives (x^2+4x+3), and (f(x)=x^2+2x). Step 3: Subtracting gives (2x+3).

Related tags

Function DifferenceQuadratic FunctionAlgebraMediumFunctionsRelations And FunctionsMathematicsClass 12 Mcq
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