Mathematics for IGCSE & O level - Functions (Section 1 - No. 22) | ExamPlay

Mathematics for IGCSE & O level - Functions (Section 1 - No. 22)

If f(x) = 2x + 1 and g(x) = x^2, what is g(f(2))?

5

9

17

25

解释

First, find f(2): f(2) = 2(2) + 1 = 5. Then, find g(5): g(5) = 5^2 = 25

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