Page 4 - ACE YR IGCSE A TOP APPR' TO ADD MATH

1 Functions

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1. The function f is defined by f(x) = 3 − x + 8 for 0 < x < 3.

(a) Write down the range of f.

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(b) Find f (x) and state its domain and range.
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2. A function f is such that f(x) = 5x − 4 for −10 < x < 5.
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(a) Find the range of f.

[3]

(b) Write down a suitable domain for f for which f (x) exists.
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[1]

Chapter 1 Functions 1

Chapter 1 Add Math (1 to 12).indd 1 14/03/2022 12:16 PM