Mathematics for IGCSE & O level - Functions (Section 1 - No. 18) | ExamPlay

Mathematics for IGCSE & O level - Functions (Section 1 - No. 18)

Given that f(x) = 2x + 1 and g(x) = x^2 - 3, what is f(g(x))?

2x^2-5

2x^2-2

4x^2-2

2x^3-5

Explicação

f(g(x)) = f(x^2 - 3) = 2(x^2 - 3) + 1 = 2x^2 - 6 + 1 = 2x^2 - 5

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