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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

설명

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

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