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If f(x) = x + 1 and g(x) = x², what is the degree of the product function (fg)(x)?

Answer and explanation

Correct answer: 3

The product function is (fg)(x) = f(x)g(x) = (x + 1)x² = x³ + x². The highest power of x is 3, so the degree is 3. Option B gives the degree of g(x) alone, not that of the product. In such questions, multiply the functions first and then identify the highest power of x.

Related tags

Relations And FunctionsAlgebra Of Real FunctionsPolynomial DegreeFunction ProductMathematicsClass 11 Mcq

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