Mathematics for IGCSE & O level - Functions (Section 4 - No. 9) | ExamPlay

Mathematics for IGCSE & O level - Functions (Section 4 - No. 9)

Given f(x) = x + 2/3 and g(x) = 3x + 2, find the expression for f(g(x))?

x + 8/3

3x + 8/3

3x + 4

x + 4

Explanation

f(g(x)) = f(3x + 2) = (3x + 2) + 2/3 = 3x + 8/3

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