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(d) Sketch the graph of y = |fg(x)| for −2 < x < 4 and state the range of y.
y
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x
[5]
3
20. It is given that f(x) = 3x − 4, g(x) = ; x ≠ 0.
x
Find the expression for each of the following functions.
(a) ff(x)
[2]
(b) gf(x)
[2]
Chapter 1 Functions 11
Chapter 1 Add Math (1 to 12).indd 11 14/03/2022 12:16 PM
